It has been 16 hours since the time of death.
How to solveStage 1: First 12 hours
12 hours * 1.4F per hour = 16.8F
Stage 2: After 12 hours
Since the body has already cooled 16.8F in the first 12 hours, we only need to find the remaining temperature drop:
19.6F - 16.8F = 2.8F
Now, we can calculate the time taken for the remaining temperature drop using the second cooling rate:
2.8F / 0.7F per hour = 4 hours
Adding the time taken for both stages, we get:
12 hours (Stage 1) + 4 hours (Stage 2) = 16 hours
So, it has been 16 hours since the time of death.
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A research group developed the following mathematical model relating systolic blood pressure and age: P(x)=a+ bln(x+1). Where P(x) is pressure, measured in millimeters of mercury, and x is age in years. By examining Guilford County hospital records, they estimate the values for Guilford County to be a=43 and b=25. Using this model, estimate the rate oI change of pressure with respect to time after 31 years. Round to the nearest hundredth ( 2 decimal places). ____ millimeters per year
Rounding to two decimal places, the rate of change of blood pressure with respect to time after 31 years is approximately 0.81 millimeters per year.
The mathematical model relating systolic blood pressure and age is given as P(x)=a+b*ln(x+1), we can differentiate it with respect to time (t) to find the rate of change of pressure with respect to time:
dP/dt = dP/dx * dx/dt
Here dx/dt is the rate of change of age with respect to time, which is simply 1 year per year or 1.
Taking the derivative of P(x) with respect to x, we get:
dP/dx = b/(x+1)
Substituting the given values for a and b, we have:
P(x) = 43 + 25ln(x+1)
dP/dx = 25/(x+1)
Therefore, the rate of change of pressure with respect to time after 31 years is:
dP/dt = dP/dx * dx/dt = (25/(31+1)) * 1 = 0.8065
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What is the surface area of a rectangular prism with dimensions 15.5 inches by 6 inches by 4 inches? PLEASE HELPPP
172 in
179 in
310 in
358 in
Answer:
Step-by-step explanation:
358 in
A=2(wl+hl+hw)=2·(6·15.5+4·15.5+4·6)=358
The surface area of the rectangular prism is 358 square inches.
Explanation:To find the surface area of a rectangular prism, you need to add up the areas of all its faces. A rectangular prism has 6 faces, and each face is a rectangle.Given dimensions of the prism are:
Length = 15.5 inchesWidth = 6 inchesHeight = 4 inchesThe formula to find the surface area of a rectangular prism is:
Surface Area = 2*(length * width + length * height + width * height)
Plugging in the values we have:
Surface Area = 2*(15.5 * 6 + 15.5 * 4 + 6 * 4) = 2*(93 + 62 + 24) = 2*(179) = 358 square inches
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Pleaese help me! Thank you!
The angle ∠ABC is 83 degrees.
How to find the angle of a cyclic quadrilateral?A cyclic quadrilateral is a quadrilateral which has all its four vertices lying on a circle.
The opposite angles of a cyclic quadrilateral have a total of 180°.
Using the theorem for cyclic quadrilateral angles and arc angles,
67 = 1 / 2 (78 + x)
where
x = ∠DC
67 = 39 + 0.5x
67 - 39 = 0.5x
28 = 0.5x
divide both sides by 0.5
x = 28 / 0.5
x = 56 degrees
Hence,
Arc ∠AC = 110 + 56 = 166 degrees
Therefore,
∠ABC = 1 / 2 (166)
∠ABC = 83 degrees
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A father and his three children decide on all matters with a vote. Each member of the family gets as many votes as their age. Right now, the family members are 36,13,6, and 4 year old, so the father always wins. How many years will it take for the three children to win a vote if they all agree?
It would take the three children a total of 19 years to have a combined total of 37 votes, assuming they all agree on a particular matter, but this assumes no new family members and the father's age remains constant.
The family's voting system is based on the principle of giving equal representation to each member of the family, with each person getting as many votes as their age. However, in the current situation, the father's age of 36 gives him an overwhelming advantage over the rest of the family. In any vote, he will always win since he has more votes than the three children combined.
To determine how many years it will take for the children to win a vote, we need to examine the age distribution of the family. Currently, the father's age is 36, while the children's ages are 13, 6, and 4. Thus, the father has a total of 36 votes, while the three children have a combined total of 23 votes (13 + 6 + 4).
Assuming that the children all agree on a particular matter, they would need to have a total of 37 votes to win a vote, since this would be a majority of the family's total voting power of 59 (36 + 13 + 6 + 4).
Therefore, we can calculate the number of years it would take for the children to have a total of 37 votes by adding their current ages to the number of years it would take for each child to gain an additional vote. For the 13-year-old, this would be 1 year, for the 6-year-old, this would be 8 years, and for the 4-year-old, this would be 10 years.
Adding up the years required for each child, we get a total of 19 years. Therefore, it would take 19 years for the children to have a combined total of 37 votes, assuming they all agree on a particular matter. However, this assumes that the father's age remains constant, and no new members join the family.
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A serving of crackers has 1. 5 grams of fat. How many grams of fat are in 3. 85 servings
The approximately grams is 5.78 of fat in 3.85 servings of crackers. The nutritional information on food packages typically lists the amount of nutrients, including fat, in grams per serving.
We used grams in this calculation to measure the amount of fat in the serving of crackers and in the total number of servings.
To determine the grams of fat in 3.85 servings of a food item, you would need to know the amount of fat in one serving of that food and multiply it by 3.85.
For example, if one serving of the food contains 10 grams of fat, then the total amount of fat in 3.85 servings would be:
10 grams of fat/serving x 3.85 servings = 38.5 grams of fat
So, there would be 38.5 grams of fat in 3.85 servings of that food item. Please note that the actual amount of fat may vary depending on the specific food item and its nutritional content.
It's always best to refer to the nutrition label or consult a reliable source for accurate and up-to-date nutritional information
To calculate the total grams of fat in 3.85 servings of crackers, you can multiply the amount of fat in one serving by 3.85.
One serving of crackers has 1.5 grams of fat.
Total grams of fat in 3.85 servings of crackers = 1.5 grams of fat per serving x 3.85 servings
= 5.78 grams of fat.
Therefore, there are approximately 5.78 grams of fat in 3.85 servings of crackers.
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Use a fraction or mixed number to represent the time on a number line. Let 0 represent noon. 12:15 P. M
The time 12:15 PM is 1 BY 4 hours after noon. The fraction that represents 12:15 AM is +1/4.
According to the question, we have to represent time 12: 15 PM in fraction and we are given that noon is represented by 0. As we have a fixed number of minutes in an hour, we can convert any number of minutes into a fraction of an hour by dividing it by 60.
The time is given as:
Time = 12:15 PM
It is given that 0 represents noon.
It means that time before noon would be represented with a negative value and time after noon would be represented with a positive value.
12:15 PM is 15 minutes after noon which means 1/4 th of an hour. So, we have:
12:15 PM = + 1/4
Hence, the fraction that represents 12:15 PM is +1/4.
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The double dot plot shows the values in two data sets.
Double dot plot shows the values of two data sets. It shows the number line ranges from 10 to 70 showing the following values that appear as dots above the line. For data set A. Two dots above 10. Three dots above 20. Four dots above 30. Two dots above 40. One dot above 50. For data set B. One dot above 30. Three dots above 40. Four dots above 50. Two dots above 60. Two dots above 70.
Compare the data sets using measures of center and variation.
Data set A Data set B
Median $=$
Median $=$
IQR $=$
IQR $=$
The median for Data Set A is 30, and
median for Data Set B is 50.
The IQR for Data Set A is 20 (from 20 to 40), also the IQR for Data Set B is also 20 (from 40 to 60).
What is the explanation for the above ?To find the median we say ......
For data set A, the median is:
The 6th value is the middle value, since there are 12 total values.
The 6th value = 30 on the number line,
since there are 2 dots above 10, 3 above 20, and 4 above 30.
Therefore, the median of data set A is 30.
For data set B, the median is:
The 7th and 8th values are the middle values, since there are 14 total values.
The 7th and 8th values = 50 on the number line,
since there are 4 dots above 50 and 2 dots above 60.
Hence, the median of data set B is 50.
To find the IQR, we need to find the range of the middle 50% of each data set.
For data set A, the IQR is:
The lower quartile is the 3rd value, which = 20 on the number line.
The upper quartile is the 9th value, = 40 on the number line.
The IQR is the difference between the upper and lower quartiles: 40 - 20 = 20.
For data set B, the IQR is:
The lower quartile is the 4th value, = 40 on the number line.
The upper quartile is the 11th value, = 70 on the number line.
Thus,
The IQR = 70 - 40 = 30.
Thus, data set B has a higher median than data set A,
And see that data set B has a larger IQR than data set A.
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what does the following indicate in a genogram:
1. square
2. circle
3. solid horizontal line
4. broken line
5. X through a square/circle
6. solid verticle line
In a genogram, various symbols and lines represent different aspects of a person's familial relationships and attributes. Here's a breakdown of the symbols you mentioned:
1. Square: A square in a genogram indicates a male individual. It represents the person's gender and is used to distinguish between male and female family members.
2. Circle: A circle in a genogram indicates a female individual. It represents the person's gender and is used to distinguish between male and female family members.
3. Solid horizontal line: A solid horizontal line in a genogram represents a marital relationship between two individuals. The line connects a square (male) and a circle (female) to show that they are married or in a committed partnership.
4. Broken line: A broken line in a genogram represents a non-blood relationship, such as an adoptive parent-child relationship or a step-sibling connection. It is used to show relationships that are not based on biological ties.
5. X through a square/circle: An X through a square or a circle indicates that the individual is deceased. This symbol is used to show that the person has passed away and is no longer living.
6. Solid vertical line: A solid vertical line in a genogram represents a parent-child relationship. It connects an individual (either a square or circle) to their parent(s), showing the biological connection between the family members.
These symbols and lines help provide a visual representation of a person's family history and relationships, making it easier to analyze and understand the various connections within a family tree.
Overall, a genogram is a visual representation of a family tree that includes important information about relationships, health issues, and other relevant details. By understanding the various symbols and indicators used in a genogram, it is possible to gain a deeper understanding of family dynamics and relationships, as well as potential risk factors for various health conditions. As such, genograms are an important tool for healthcare providers, therapists, and other professionals working with individuals and families.
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Weekly Expenses Per Person for Tyler, Texas
Housing $243 Utilites $97 Insurance $192
Transportation $194 Other $149 Taxes $124
If there are 4 weeks in a month, what is the minimum monthly amount
needed per person to live in Tyler, Texas?
PLS HELP
It’s just 7th grade math
You are given two numbers, stored in a variable with the names, a, b You have to find the sum of X, Y and z 1. X = (a*3) + (b*5) 2. Y = (a*7) + (b*4) 3. Z = a*b Find the value of sum, such that sum = x + y + Z
The value of sum is X+Y+Z.
To find the sum of X, Y, and Z using the given variables a and b, you'll need to calculate the values of X, Y, and Z first, then add them together.
Here's a step-by-step explanation:
1. Calculate X: X = (a * 3) + (b * 5)
2. Calculate Y: Y = (a * 7) + (b * 4)
3. Calculate Z: Z = a * b
4. Find the sum: sum = X + Y + Z
By following these steps with the given values of a and b, you will find the value of sum, such that sum = X + Y + Z.
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Use technology or a z-distribution table to find the indicated area.
The weights of tomatoes in a bin are normally distributed with a mean of 95 grams and a standard deviation of 3.6 grams.
Approximately 25% of the tomatoes weigh less than which amount?
Approximately 25% of the tomatoes weigh less than 97.43 grams.
How to obtain probabilities using the normal distribution?The z-score of a measure X of a normally distributed variable that has mean represented by [tex]\mu[/tex] and standard deviation represented by [tex]\sigma[/tex] is obtained by the equation presented as follows:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score represents how many standard deviations the measure X is above or below the mean of the distribution of the data-set, depending if the obtained z-score is positive(above the mean) or negative(below the mean).The z-score table is used to obtain the p-value of the z-score, and it represents the percentile of the measure X in the distribution.The mean and the standard deviation for this problem are given as follows:
[tex]\mu = 95, \sigma = 3.6[/tex]
Approximately 25% of the tomatoes weigh less than the 25th percentile, which is X when Z = 0.675, hence:
0.675 = (X - 95)/3.6
X - 95 = 0.675 x 3.6
X = 97.43 grams.
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The temperature during a very cold day is recorded every 2 hours for 12 hours. The data are given in the table below.
Time (hours) 6 8 10 12 14 16 18
Temperature (℃) 3.88 6.48 9.37 10.42 8.79 4.96 0.69
Which polynomial models these data?
C(x) = 0.167x^3 + 2.76x^2 - 16.91x + 38.87
C(x) = 0.0034x^4 - 0.167x^3 + 2.76x^2 - 16.91x + 38.87
C(x) = 0.167x^3 + 2.76x^2 - 16.91x
C(x) = 0.0034x^4 - 0.167x^3 + 2.76x^2 - 16.91x
The polynomial that models the data is:
B. C(x) = 0.0034x^4 - 0.167x^3 + 2.76x^2 - 16.91x + 38.87
How to solveWith seven data points at our disposal, it is possible to utilize a polynomial of degree six, which can precisely represent the given data.
However, using a simpler model could be advantageous when applied to other datasets.
The provided information can be utilized to formulate a system of equations using a fourth-degree polynomial. The following data will serve as each equation:
• At x=6: the output value is 3.88,
• At x=8: the output value is 6.48,
• At x=10: the output value is 9.37
• At x=12: the output value is 10.42,
• At x=14: the output value is 8.79,
• At x=16: the output value is 4.96,
• At x=18: the output value is 0.69,
The problem's solution can be attained through utilizing matrix algebra.
a = 0.0034,
b = -0.167,
c = 2.76,
d = -16.91,
e = 38.87
This results in the following expression that represents the data:
C(x) = 0.0034x^4 - 0.167x^3 + 2.76x^2 - 16.91x + 38.87
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In a flower garden, there are 6 tulips for every 7 daisies. If there are 48 tulips, how many daisies are there?
Answer:
56, There are 56 daisies.
Step-by-step explanation:
a closed cylindrical can has a fixed surface area s. find the ratio of its height to the diameter of its base that maximizes its volume.
The ratio of the height to the diameter that maximizes the volume of the cylindrical can is: 0.886 approximately.
Let the radius of the cylindrical can be denoted by r, and its height by h. The surface area of the can is given by:
S = 2π[tex]r^2[/tex]+ 2πrh
Simplifying this expression, we get:
h = (S - 2π[tex]r^2[/tex])/(2πr)
The volume of the cylindrical can is given by:
V = π[tex]r^2[/tex]h
Substituting the expression for h obtained earlier, we get:
V = π[tex]r^2[/tex](S - 2π[tex]r^2[/tex])/(2πr)
Simplifying this expression, we get:
V = (S/2π - [tex]r^2[/tex])πr
To maximize the volume of the cylindrical can, we need to find the value of r that maximizes the above expression. We can do this by differentiating the expression with respect to r, setting it equal to zero, and solving for r:
dV/dr = (S/2π - [tex]2r^2[/tex])π = 0
Solving for r, we get:
r = √(S/4π)
Substituting this value of r back into the expression for h, we get:
h = (S - 4π[tex]r^2[/tex])/(4πr) = (S - S/2)/(2√(S/4π)) = √(Sπ)/2
Therefore, the ratio of the height to the diameter that maximizes the volume of the cylindrical can is:
h/2r = (√(Sπ)/2)/(2√(S/4π)) = √(π/4) = 0.886 approximately.
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What is the product of 2x3 +9 and x3 +7?
The product of the expression is 2x⁶ + 23x³ + 63
How to determine the productFirst, we should note that algebraic expressions are described as expressions that are composed of coefficients, terms, constants, variables and factors.
These algebraic expressions are also made up of mathematical operations, such as;
BracketAdditionMultiplicationDivisionParenthesesSubtractionFrom the information given, we have that;
2x3 +9 and x3 +7?
Then,
(2x³ + 9)(x³ + 7)
expand the bracket
2x⁶ + 14x³ + 9x³ + 63
add like terms
2x⁶ + 23x³ + 63
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The variable x represents the number of angelfish Carlos bought and the variable y represents the number of parrotfish he bought.
Carlos bought 405 tropical fish for a museum display. He bought 8 times as many parrotfish as angelfish.
How many of each type of fish did he buy?
Which system of equations models this problem?
The system of equations models this problem:
x + y = 405
y = 8x
The correct answer is an option (c)
Here, the variable x represents the number of angelfish Carlos bought and the variable y represents the number of parrotfish he bought.
Carlos bought 8 times as many parrotfish as angelfish.
From this statement we get an equation,
y = 8x
Carlos bought 405 tropical fish for a museum display.
This means that the total number of fish = 405
so, we get an equation,
x + y = 405
Therefore, the system of equations would be,
x + y = 405
y = 8x
The correct answer is an option (c)
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What is 4 1/2 plus 69 in
Answer:
73 1/2
Step-by-step explanation:
Answer:
Inches (fraction) : 73 1/2
Inches: 73.5
Feet: 6.13
Meters: 1.87
Centimeters: 186.69
Millimeters: 1,866.9
Step-by-step explanation:
The girls’ swim team is hosting a fund raiser. They would like to raise at least $500. They are selling candles for $5 and flower arrangements for $6. The girls estimate that they will sell less than 200 items. Let c represent candles and f represent flower arrangements. Which system of inequalities represents this situation?
The system of inequalities represents this situation is:
c + f ≤ 200
5c + 6f ≥ 500
What is inequality in math?A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.
Let c represent candles arrangements
Let f represent flower arrangements.
The girls estimate that at most they will sell 200 items.
The equation will be:
c + f ≤ 200
They would like to raise at least $500. They are selling candles for $5 and flower arrangements for $6.
$5 × c + $6 × f ≥ $500
5c + 6f ≥ 500
Therefore, the system of inequalities is given as:
c + f ≤ 200
5c + 6f ≥ 500
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Question 9
In an educational study, the researchers hypothesised that older students tend to make more complaints over minor details (e.g. spelling mistakes and grammar) compared to their younger counterparts.
Which of the statistical tests below would be the most appropriate to utilise in addressing this hypothesis?
1.Paired t-test 2.Correlation 3.Binomial
4.Chi-square
If the chi-square test shows that there is a significant association, then it can be concluded that older students tend to make more complaints over minor details compared to their younger counterparts.
The most appropriate statistical test to utilize in addressing the hypothesis that older students tend to make more complaints over minor details compared to their younger counterparts would be the chi-square test.
The chi-square test is used to analyze the categorical data and determine whether there is a significant association between two categorical variables. In this case, the two categorical variables would be the age group of the students (older vs. younger) and the frequency of complaints over minor details.
The researchers could collect data by randomly selecting a sample of older and younger students and recording the number of complaints made by each student over minor details. This data could then be organized into a contingency table with rows representing the age group of the students and columns representing the frequency of complaints.
Once the data is organized in this way, the chi-square test can be used to determine if there is a significant association between age group and frequency of complaints. If the chi-square test shows that there is a significant association, then it can be concluded that older students tend to make more complaints over minor details compared to their younger counterparts.
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The 11 members of the Town Board must decide where to build a new post office. Their three choices are (L)ehigh Road, (E)rie Road, and (O)ntario Road. The results are displayed in the table.Votes 5 2 41st L E O2nd E O E3rd O L LDetermine the winner using the pairwise comparison method.Select one:a. No winner -- three-way tieb. Eriec. Ontariod. Lehighe. No winner -- Erie and Lehigh tie
The winner using the pairwise comparison method is found to be Ontario. The correct answer is option c.
11 members of the town board must decide where to build a new post office.
Using the pairwise comparison method, we compare each choice against the other two.
For Lehigh Road (L) vs. Erie Road (E): L receives 5 votes and E receives 2 votes. Therefore, L wins this comparison.
For Lehigh Road (L) vs. Ontario Road (O): L receives 2 votes and O receives 4 votes. Therefore, O wins this comparison.
For Erie Road (E) vs. Ontario Road (O): E receives 2 votes and O receives 4 votes. Therefore, O wins this comparison.
Based on these pairwise comparisons, Ontario Road (O) wins with a total of 8 votes, followed by Lehigh Road (L) with a total of 7 votes, and Erie Road (E) with a total of 4 votes.
Therefore, the correct answer is the option c. Ontario
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ASAP help need help with questions
The component form and magnitude of the vector are;
v = 3·i - 2·j
||v|| = √(14)
What is the component form of a vector?The component form of a vector is expressed as <x, y>, which indicates the distance of the vector to the right or left, x-component, and the distance up or down of the y-component.
The coordinate points on the vector are; (0, 0), and (3, -2)
The component form of the vector consists of the horizontal and vertical components, which can be found as follows;
Horizontal component = (3 - 0)·i = 3·i
The vertical component = (-2 - 0)·j = -2·j
The component form of the vector is therefore;
v = ⟨3, -2⟩
The magnitude of the vector can be obtained as follows;
||v|| = √((3 - 0)² + (-2 - 0)²) = √(14)
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A gym subscription runs several promotions. Customers can choose from the following deals.
Option A: 25% off an annual subscription of $308.00
Option B: pay $29.00 per month
What is the difference between the two price options customers will pay annually?
The difference between the two price options is $117.
What is the price difference?After a 25% off, the annual subscription in option A would be lower.
Price after the 25% off = initial annual subscription x (1 - discount/100)
$308 x (1 - 25/100)
$308 x (1 - 0.25)
$308 x 0.75 = $231
Annual fee with option B = cost per month x 12
$29 x 12 = $348
Price difference = $348 - $231 = $117
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abstract-algebra
(4) Show that there is a nonabelian group of order 63. (Hint: Re- view the example of a group of order 21 from class and see if a you can modify that to find a nonabelian group of order 63 €
(1,0) has order 1 in C7 and order 1 in C3, and (0,1) has order 7 in C7 and order 1 in C3, we see that ((1,0),(0,1)) has order 7 in G and ((1,0),(1,0)) has order 3 in G. Similarly, ((1,1),(0,1)) has order 7 in G and ((1,1),(1,1)) has order 3 in G.
The group of order 21 is isomorphic to the cyclic group C7 x C3. We can use this group to construct a nonabelian group of order 63 as follows:
Consider the direct product of two groups of order 21: G = (C7 x C3) x (C7 x C3). Since the direct product of two abelian groups is also abelian, we know that G is not abelian if and only if it contains non-commuting elements.
Define two elements a = ((1,0),(0,1)) and b = ((1,1),(0,1)) in G. It can be shown that a and b have orders 3 and 7, respectively, and that they do not commute. Therefore, G is nonabelian.
To see why a and b have orders 3 and 7, respectively, note that the order of (g,h) in G is equal to the least common multiple of the orders of g and h in their respective groups. Since (1,0) has order 1 in C7 and order 1 in C3, and (0,1) has order 7 in C7 and order 1 in C3, we see that ((1,0),(0,1)) has order 7 in G and ((1,0),(1,0)) has order 3 in G. Similarly, ((1,1),(0,1)) has order 7 in G and ((1,1),(1,1)) has order 3 in G.
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Solve for the following systems using the algebraic method.
1. 3x + 4y = 12; 2x – 3y = 6
2. x + y = 3; x – y = 5
3. 3x + 2y – z = 4; 2x – y + 3z = 4; x + y + 2z = 4
4. x – y + 5z = -4; 4x – 2y + 3z = 1; 3x – 2y + 6z = 6
5. x2 + y2 = 13; 2x – 3y = -5
6. 5x2 + y2 = 14; 3x2 – 2y2 = -15
7. 2x2 + 5x – 4y = 3; 3x2 – 3x + 2y2 = 2
Answer: Example 2: Solve the system of equations with augmented matrices using the Gauss-Jordan elimination method. x – 3z = – 2. 2x + 2y + z = 4. 3x + y – 2z = 5.
Step-by-step explanation:
Answer:
3x + 4y = 12; 2x – 3y = 6
Multiplying the first equation by 2 and the second equation by 3, we get:
6x + 8y = 24
6x - 9y = 18
Subtracting the second equation from the first, we get:
17y = 6
y = 6/17
Substituting y in the first equation, we get:
3x + 4(6/17) = 12
3x = 180/17 - 24/17
3x = 156/17
x = 52/17
Therefore, the solution of the given system is x = 52/17 and y = 6/17.
x + y = 3; x – y = 5
Adding the two equations, we get:
2x = 8
x = 4
Substituting x in the first equation, we get:
4 + y = 3
y = -1
Therefore, the solution of the given system is x = 4 and y = -1.
3x + 2y – z = 4; 2x – y + 3z = 4; x + y + 2z = 4
Adding the first and second equations, we get:
5x + y + 2z = 8
Subtracting the third equation from the above equation, we get:
4x + z = 4
Substituting z = 4 - 4x in the third equation, we get:
3x + 2y - (4 - 4x) = 4
7x + 2y = 8
Substituting y = (8 - 7x)/2 in the first equation, we get:
9x - z = 8
Substituting z = 4 - 4x, we get:
x = 4/5, y = 2/5, and z = 4/5
Therefore, the solution of the given system is x = 4/5, y = 2/5, and z = 4/5.
x – y + 5z = -4; 4x – 2y + 3z = 1; 3x – 2y + 6z = 6
Multiplying the first equation by -4 and adding it to the second equation, we get:
16x - 6z = 17
Multiplying the first equation by -3 and adding it to the third equation, we get:
9x + 4z = 18
Multiplying the second equation by 2 and subtracting it from the third equation, we get:
x + 6z = 8
Substituting z = (8 - x)/6 in the above equation, we get:
x = 10/3, y = 8/3, and z = 2/3
Therefore, the solution of the given system is x = 10/3, y = 8/3, and z = 2/3.
x2 + y2 = 13; 2x – 3y = -5
Squaring the second equation and simplifying, we get:
4x2 - 12xy + 9y2 = 25
Adding the above equation to the first equation, we get:
5x2 + 10y2 = 38
Sub
Step-by-step explanation:
How is wind speed related to the time of day?
Time of Day Wind Speed (mph)
12:00 (noon) 10
1:30 P.M. 0
4:00 P.M. 15
6:30 P.M. 5
7:30 P.M. 0
a. The later in the day, the faster the wind speed.
b. The earlier in the day, the faster the wind speed.
c. Wind speed is consistent throughout the day.
d. no relationship
There is no relation between wind speed and the time as per the given table.
It is impossible to establish a clear correlation between wind speed and time of day using the data in the table.
At noon, the wind is blowing at 10 mph; at 1:30 PM, it is at 0 mph; at 4:00 PM, it is 15 mph; at 6:30 PM, it is 5 mph; and at 7:30 PM, it is back at 0 mph.
Consequently, it is evident that the wind speed varies during the day; nevertheless, no discernible pattern suggests that the wind speed constantly rises or falls throughout the course of the day.
Thus, d. no relationship is the right response.
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The diagram shows three streets that form the perimeter of a park. How far is it from the corner of Oak and Ridgewood to the corner of Oak and Savannah?
Round to the nearest tenth of a yard.
The distance from the corner of Oak and Ridgewood to the corner of Oak and Savannah is given as follows:
276 yd.
What is the law of sines?Suppose we have a triangle in which:
Side with a length of a is opposite to angle A.Side with a length of b is opposite to angle B.Side with a length of c is opposite to angle C.The lengths and the sine of the angles are related as follows:
[tex]\frac{\sin{A}}{a} = \frac{\sin{B}}{b} = \frac{\sin{C}}{c}[/tex]
Then the ratio for this problem is given as follows:
sin(38º)/d = sin(42º)/300
The distance is obtained as follows:
d = 300 x sine of 38 degrees/sine of 42 degrees
d = 276 yd.
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I need the answer in 30 mins or less!! 45 points!!!
Which point is Coplanar with points A and C?
1. A
2. B
3. C
4. D
Answer: B
Step-by-step explanation: Coplanar= in the same plane
1. Go online and find an example of a time a country had a very poor foreign exchange rate policy. In the discussion, briefly share: -Which country and what time period -What mistakes were made -What happened as a result (You can choose ANY country from any current or historical period you want)2. Based on the comments made by the governor of the bank of Canada, what are your expectations for key economic variables over the next year?
1. An example of a country with a poor foreign exchange rate policy is Argentina during the early 2000s.
From 1991 to 2001, Argentina implemented a currency board system where the Argentine peso was pegged to the US dollar at a fixed exchange rate of 1:1. This policy led to several mistakes and eventually resulted in a financial crisis:
- Mistakes made: The currency board system limited the government's ability to manage the money supply and respond to economic shocks. Also, the overvalued peso made Argentina's exports more expensive, which hurt the competitiveness of its industries.
- What happened as a result: Argentina faced a severe recession, high unemployment, and a massive public debt. In December 2001, the country defaulted on its debt, leading to a currency crisis and the abandonment of the currency board system. The peso depreciated sharply, causing severe economic hardship for the population.
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Last one I promise.
Make everything simple.
The area of a circle can be obtained from the use of formula πr^2
What is the circumference of the circle?The circumference of a circle is the distance around the circle, which can be found using the formula; C = 2πr
where "C" is the circumference, "π" (pi) is a mathematical constant approximately equal to 3.14, and "r" is the radius of the circle.
Area of the circle = 3.14 * (3)^2 = 28.26 cm^2
C = 2 * 3.14 * 3 = 18.84
2) A = 3.14 * (17)^2 = 907.46
C = 2 * 3.14 * 17 = 106.76
3) A = 3.14 * (324)^2 = 329.624.64
C = 2 * 3.14 * 324 = 2034.72
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please please please i’m i’m so much trouble for not having this done
define a please w/ explanation
Answer:
do this solve in calc (a+1)^2+(a+3)^2=(a+5)^2