Answer:correct answer is 0.57
5.71
Step-by-step explanation:We can solve this quadratic equation in cos(θ) by using the substitution u = cos(θ):
3u^2 + 7u - 8 = 0
Now we can factor the quadratic:
(3u - 1)(u + 8) = 0
Therefore, either:
3cos(θ) - 1 = 0
cos(θ) = 1/3
or:
cos(θ) + 8 = 0
cos(θ) = -8 (not possible, since cos(θ) is between -1 and 1)
So, we have cos(θ) = 1/3. Since 0 ≤ θ < 2π, we can find the two solutions in the interval [0, 2π) by using the inverse cosine function:
θ = arccos(1/3)
Using a calculator, we find:
θ ≈ 1.2309 or θ ≈ 5.1102
Therefore, in radians, the solutions for θ are approximately:
1.2309 (which is less than 2π)
5.1102 (which is greater than 2π)
So the only answer that satisfies 0 ≤ θ < 2π is:
1.2309 (rounded to four decimal places)
Therefore, the answer is:
Please help!!!!! I am in need of it, this is for math nation unit 1 and im failing!!!!!!!
Answer:
5
Step-by-step explanation:
use the table, when it asks f(2) that says what is the output *y) when the input is 2. Find when x=2 your answer is the y value, f(2)=5
Assume that the speed of automobiles on an expressway during rush hour is normally distributed with mean of 62 mph and a standard deviation of 5 mph.
What percent of cars are traveling slower than 62 mph?
Write your percentage as a decimal (so 12% = 0.12)!
The percentage of cars traveling slower than 62 mph during rush hour is 0.5 or 50%.
Since the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 62 mph and a standard deviation of 5 mph, we can use the cumulative distribution function (CDF) of the normal distribution to find the percentage of cars traveling slower than 62 mph.
Let X be the speed of an automobile on the expressway during rush hour. Then, X follows a normal distribution with mean (µ) = 62 mph and standard deviation (σ) = 5 mph.
We want to find P(X < 62), which represents the probability that a car is traveling slower than 62 mph.
Using the standard normal distribution table or a calculator with built-in functions for the normal distribution, we can find the z-score corresponding to the value X = 62, using the formula;
z = (X - µ) / σ
Plugging in the given values;
z = (62 - 62) / 5 = 0
Now, we can find the cumulative distribution function (CDF) of the standard normal distribution at z = 0, denoted as Φ(0), which represents the probability that a standard normal random variable is less than or equal to 0.
Using the standard normal distribution table or a calculator with built-in functions for the normal distribution, we can find Φ(0) to be approximately 0.5.
So, P(X < 62) = Φ(0)
= 0.5
Therefore, the percentage of car is 0.5 or 50%
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What is the value of x in the equation 4x+2x-3=15?
Answer:
x = 3
Step-by-step explanation:
4x + 2x - 3 = 15 ← collect like terms on left side
6x - 3 = 15 ( add 3 to both sides )
6x = 18 ( divide both sides by 6 )
x = 3
Answer:
x=3
Step-by-step explanation:
You can start of by adding 4x and 2x because they both share the same variable "x". Now you have 6x-3=15. Using the addition property of equality, you can add 3 on both sides of the equation to cancel it out. You are left with 6x=18. Divide both sides by 6 and that leaves you with x=3
3×2×1+3+8+6+7-9-9÷7×0×1=?
Answer:
3 × 2 × 1 + 3 + 8 + 6 + 7 - 9 - 9 ÷ 7 × 0 × 1
= 6 + 3 + 8 + 6 + 7 - 9 - 0
= 31 - 9
= 22
Therefore, the value of the expression is 22
Andrew deposits $40 in a saving account earning5% interest, compounded annually. Which function can be used to determine the amount of money in the savings account after x years
The function that can be used to determine the amount of money is f(x) = 40 * (1.05)^x
Which function can be used to determine the amount of moneyFrom the question, we have the following parameters that can be used in our computation:
Principal = 40
Rate = 5% annually
Time = x
The function that can be used to determine the amount of money is represented as
f(x) = P * (1 + r)^x
Substitute the known values in the above equation, so, we have the following representation
f(x) = 40 * (1 + 5%)^x
Evaluate
f(x) = 40 * (1.05)^x
Hence, the function is f(x) = 40 * (1.05)^x
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opic: Choosing ping-pong balls without replacement.
There are 6 white and 3 orange ping-pong balls in a brown paper bag. Two balls are randomly chosen.
Enter your answers as fractions. They do not need to be reduced.
(The "Preview" simply displays your answer in nice mathematical text.
It does not mean that your answer is either right or wrong.)
a) How many total balls are in the bag at the start?
b) What is the probability that the 1st ball is orange?
P(1st = orange) =
c) What is the probability that the 2nd ball is also orange, given that the 1st ball was orange?
P(2nd = orange | 1st = orange) =
d) What is the probability that both the 1st and the 2nd balls are orange
a) The total number of balls in a bag is 9.
b) The probability that the first ball chosen is orange is 1/3.
c) The probability that the 2nd ball is also orange is 1/4.
d) The probability that both balls are orange is 1/12.
Given that:
Balls, White = 6 and Orange = 3
a) The total of ping-pong balls in the bag at the start is calculated as,
Total ball = 6 + 3
Total ball = 9
b) The probability that the first ball chosen is orange is calculated as,
P(Orange) = 3/9
P(Orange) = 1/3
c) There will be 8 balls in the bag, of which 2 are orange if the first ball selected was an orange ball. Then the probability is calculated as,
P(Orange) = 2/8
P(Orange) = 1/4
d) The product rule of probability may be used to determine the likelihood that the first and second balls are both orange:
P(Orange and Orange) = 1/3 x 1/4
P(Orange and Orange) = 1/12
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Please answer asap!! what is the equation that best models the data from the table after the data has been linearized?
The equation that best models the data from the table after the data has been linearized is y=294755 * 1.21728^x. This equation follows an exponental model.
When is the exponential model best used for an equation?Looking at the data, it is very evident that it is not increasing linearly but rather exponentially.
An exponential equation has the general pattern of formula which y = ab^x, where a is the main value and b is the growth factr.
The question below is as seen in the picture, and the above answer is dependent on it.
What is the equation that best models the data from the table after the data has been linearized?
X y
2 4.4
7 18.2
13 120.0
19 715.4
22 1,768.3
26 5,775.9
30 10.508.5
(1 point)
logy=0.12502x+0.427231
y=1,350 76x+1,350.76
y=294755 * 1.21728^x
y=5,927 281og x-3,880 59
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A
Find the measure of each side indicated.
Round to the nearest tenth.
8)
X
5 C
58°
B
The value of the measure of each side indicated are,
⇒ x = 12.48
⇒ BC = 16
We have to given that;
In triangle ABC;
AC = x
AB = 10
Hence, We can formulate;
⇒ tan 58° = BC / AB
⇒ 1.60 = BC / 10
⇒ BC = 16
By using Pythagoras theorem;
⇒ x² + 10² = 16²
⇒ x² = 256 - 100
⇒ x² = 156
⇒ x = 12.48
Thus, The value of the measure of each side indicated are,
⇒ x = 12.48
⇒ BC = 16
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Find the equation of a line that passes through the point ( 4 , 2 ) that is perpendicular to the line y = 4 3 x . Show your work.
The equation of the line that passes through the point (4, 2) and is perpendicular to the line y = 43x is y = (-1/43)x + (90/43).
What is the equation of a line that passes through the point ( 4 , 2 ) that is perpendicular to the line y = 43x?The formula for equation of line is expressed as;
y = mx + b
Where m is slope and b is y-intercept.
Given that the line has a slope of 43.
To find the slope of the line perpendicular to it, we use the fact that the product of the slopes of two perpendicular lines is -1.
So, the slope of the perpendicular line is -1/43.
Using the point-slope form of a line, we can write the equation of the line as:
y - y1 = m(x - x1),
where (x1, y1) = (4, 2) and m = -1/43
Plugging in the values, we get:
y - 2 = (-1/43)(x - 4)
y - 2 = (-1/43)x + (4/43)
y = (-1/43)x + (4/43) + 2
y = (-1/43)x + (90/43)
Therefore, the equation of the line is y = (-1/43)x + (90/43).
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The question is on the image when u get the answer get back to me asap
Answer:
Step-by-step explanation:
y=-2x+2
the function h is defined by the following rule. h(x)=4x+5 complete the function table
For the function h(x) the values of h(x) when x=0,1,2,3,4,5 are 5, 9, 13,17,21,25 respectively
The given function is h(x) 4x+5
h of x equal to four times of x plus five
We have to find the values of h(x) for different values of x
x=0, h(x) = 5
x=1, h(x)=9
x=2, h(x)=13
x=3, h(x)=17
x=4, h(x)=21
x=5, h(x)=25
Hence, for the function h(x) the values of h(x) when x=0,1,2,3,4,5 are 5, 9, 13,17,21,25 respectively
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Please help with this question I’m stuck brainiest and points will be rewarded
Matching of the statements with their respective linear equations are:
1) The line contains (0, -8) and a slope of 3/2: y = ³/₂x - 8
2) A line that contains the point (0, -2) and (4, 0): 2y - x = -4
3) y-intercept is (0, -2) and slope is -3/4: y = -³/₄x - 2
4) A line that has a slope of 5/3 and a y-intercept of -4: 5x + 3y = -12
How to Identify the linear equation?The formula for the equation of a line in slope intercept form is:
y = mx + c
where:
m is slope
c is y-intercept
1) The line contains (0, -8) and a slope of 3/2
The only option that even has a slope of 3/2 is option B with the equation: y = ³/₂x - 8
2) A line that contains the point (0, -2) and (4, 0)
The only one that fits this is option C with the equation:
2y - x = -4
3) y-intercept is (0, -2) and slope is -3/4.
This means the only equation that matches it is:
y = -³/₄x - 2
4) A line that has a slope of 5/3 and a y-intercept of -4.
This means the only equation that matches it is:
5x + 3y = -12
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List at least five combinations of nickels and dimes such that the total value of the coins is 80 cents.
Here are five combinations of nickels and dimes that add up to 80 cents:
4 dimes and 4 nickels
3 dimes and 7 nickels
2 dimes and 12 nickels
1 dime and 16 nickels
8 dimes and 4 nickels
Find the average of 327 and 827
Answer:
577
Step-by-Step Explanation:
577 is right between 327 and 827.
327+827=1,154
1,154/2=577
Bozo can read at a rate of 300 words every four minutes. what is his rate of reading in words per minute?
Answer:
Bozo's rate of reading in words per minute is 75 (300 words / 4 minutes = 75 words/minute).
Step-by-step explanation:
Mark Brainliest!!
Answer: 75 words per minute
Step-by-step explanation:
We will divide 300 words by 4 to find the rate of words per minute since the original rate is words per four minutes.
300 / 4 = 75 words per minute
Solve the equation and check your solution. 5 t = 7 and one-half Multiply 5t by 5; the answer is 7 and one-half. Divide 5t by 5; the answer is 7 and one-half. Divide both sides by 5; the answer is 1 and one-half. Multiply both sides by 5; the answer is 37 and one-half.
Answer: the answer is 13 and one-half
Step-by-step explanation:
C
Step-by-step explanation:
The table shows the distribution, by age and gender, of the million people in a certain region who live alone. Use the data in the table to find the probability that a randomly selected person in the region is a woman in the 1824 age range living alone.
The probability that a randomly selected person in the region is a woman in the 18-24 age range living alone is approximately 0.14 or 14%.
To find the probability that a randomly selected person in the region is a woman in the 18-24 age range living alone, we need to look at the intersection of the "Female" row and the "0-24" age column in the table.
The probability of selecting a woman in the 18-24 age range living alone is:
P(woman, 18-24, living alone) = (Number of women in the 18-24 age range living alone) / (Total number of people living alone)
From the table, we can see that the number of women in the 18-24 age range living alone is 20.9. The total number of people living alone is 153.6.
P(woman, 18-24, living alone) = 20.9 / 153.6
P(woman, 18-24, living alone) = 0.1362 or approximately 0.14
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The complete question:
The table shows the distribution, by age and gender, of the million people in a certain region who live alone. Use the data in the table to find the probability that a randomly selected person in the region is a woman in the 1824 age range living alone. Age |0-24|25-49|50+ |Total
Male|21.9|25.3 |28.6|75.8
Fem |20.9|26.1 |30.8|77.8
Tot |42.8|51.4 |59.4|153.6
PLEASE HELP (WILL GIVE BRAINLIEST)
Answer:
[tex] \sqrt{ {13.5}^{2} - {8.6}^{2} } = \sqrt{108.29} = 7 \sqrt{2.21} = \frac{7}{10} \sqrt{221} [/tex]
V = (1/2)(8.6)(.7√221)(22.4) = 1,002.33 square meters
The closest answer is 1,001.73 square meters.
dude what is this i dont understand
Answer:
g(1) = 1
Step-by-step explanation:
the absolute value function always gives a positive result, that is
| - a | = | a | = a
to evaluate g(1) substitute x = 1 into g(x)
g(1) = - 3| 1 - 2| + 4
= - 3| - 1| + 4
= - 3(1) + 4
= - 3 + 4
= 1
The Downtown Community Barbecue served 404 dinners. A child's plate cost $2.80 and an adult's plate cost $6.90. A total of $1,963.50 was collected. How many of each type of plate was served? Round answers to the nearest whole person.
The number of childs plate are 201 and adult's plate are 203.
Let's use C to represent the number of child plates and A to represent the number of adult plates.
We know that a child's plate costs $2.80 and an adult's plate costs $6.90.
Therefore, we can write two equations based on the information given:
The total number of plates served is 404
C + A = 404 ...(1)
C=404-A
The total amount collected is $1,963.50
2.8C + 6.9A = 1963.5 ..(2)
2.8(404-A)+6.9A= 1963.5
1131.2 - 2.8A +6.9A=1963.5
4.1 A =1963.5 -1131.2
4.1A=832.3
Divide both sides by 4.1
A=832.3/4.1
A=203
Now put A in equation (1)
C+203=404
C=404-203
C=201
Hence, the number of childs plate are 201 and adult's plate are 203.
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A marble is selected at random from a jar containing 10 red marbles, 50 yellow marbles, and 40 green marbles. Find the theoretical probability that it is
either red or green.
P(red or green) = (Type an integer or a simplified fraction.)
Answer:0.5.
Step-by-step explanation:
Answer:
0.5
Step-by-step explanation:
hope this helps
A plane is heading due east with a ground speed of 398 mph. A 50-mph wind is blowing at a bearing 48 degrees. Find the planes resulting speed.
The answer…………………..:
Answer:
what?
Step-by-step explanation:
Jake just learned to identify the difference between an oak tree and a
maple tree. He was curious about the concentration of these trees in his
neighborhood, so he went out and identified several trees that were either
by the pond or in the field.
Unfortunately, he smudged his data tables and can't read some of the
values. The absolute and relative frequency tables below show Jake's
salvaged data. Can you help him figure out the rest?
Fill in the missing values from each table.
The value of row total of the column total's is 165.
The value of row total of field is 91
How to calculate the valueColumn total of maple can be found by:
(46.32 /100) * y =44
Or y = (44 *100)/46.32
Or y = 94.991 =95 (approx)
Now we get value of field under maple by
Value of field under maple = (column total - value of pond under maple) = (95 - 44) = 51
Value of row total of the column total's = (column total of oak + column total of maple = (70 + 95) = 165 (total data)
Value of row total of field = ( value of field under oak + value of field under maple) = (40 + 51) = 91
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Select the correct answer.
What is √81y6 in simplest form?
A. 3√/9y
B. 9y^4
C.3 √9y^2
D.9y^3
Factor each polynomial function. Based on these factors, which polynomial’s graph crosses the x-axis at only one point? A. f ( x ) = x 3 − 7 x 2 + 3 x − 21 B. f ( x ) = x 3 − 3 x 2 − 4 x + 12 C. f ( x ) = x 3 + 2 x 2 − 9 x − 18 D. f ( x ) = x 3 − 2 x 2 − 16 x + 32
Based on these factors, the polynomial that graph crosses the x-axis at only one point is A. f ( x ) = x ³ − 7 x² + 3 x − 21
What is a polynomial?A polynomial in mathematics is a mathematical statement made up of variables (also known as indeterminates) and coefficients that only include the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.
Polynomials are a fundamental algebra topic that is used in many areas of mathematics. A polynomial's degree is the largest exponent of the variable x in the expression. The correct option is A.
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Mitra drives her car 469.8 miles and uses 14.5 gallons of gasoline. Adira drives her car 355 miles and uses 12.5 gallons of gasoline. What is the difference between the gas mileage for Mitra's car (in miles per gallon) and the gas mileage for Adira's car (in miles per gallon)?
A) 2 miles per gallon
B) 4 miles per gallon
C) 8 miles per gallon
D) 9 miles per gallon
Answer:
4 miles per gallon. Answer choice B is correct.
Step-by-step explanation:
To find the gas mileage for each car, we need to divide the distance traveled by the amount of gasoline used.
For Mitra's car, the gas mileage is:
gas mileage = distance traveled / amount of gasoline used
gas mileage = 469.8 / 14.5
gas mileage = 32.4 miles per gallon
For Adira's car, the gas mileage is:
gas mileage = distance traveled / amount of gasoline used
gas mileage = 355 / 12.5
gas mileage = 28.4 miles per gallon
To find the difference in gas mileage, we can subtract the gas mileage for Adira's car from the gas mileage for Mitra's car:
difference = gas mileage for Mitra's car - gas mileage for Adira's car
difference = 32.4 - 28.4
difference = 4 miles per gallon
Therefore, the difference in gas mileage between the two cars is 4 miles per gallon. Answer choice B is correct.
if u were to flip a coin 15 times how many times will the coin land on tails
an octagonal prism has a surface area of 50mm^2 and a volume of 88 mm^3 Another octagonal prism has a surface area of 450mm^2 and a volume of 792mm^3. Are these two shapes similar ? Explain your answer
The two octagonal prisms are similar because their corresponding sides are proportional.
How do we determine the octagonal prisms are similar?We can find out if two octagonal prisms are similar by checking if they have the same shape but may be different sizes. Two shapes are similar if their corresponding sides are proportional, and their corresponding angles are congruent.
Let's represent the dimensions of octagonal prism1:
Base edge length = a
Height = h
The octagonal prism2 dimensions:
Base edge length = b
Height = k
From the surface area and volume equations of an octagonal prism, we have the following system of equations:
50 = 2a² + 8ah
88 = 2a²h
450 = 2b² + 8bk
792 = 2b²k
We can simplify these equations by dividing the second equation by the first, and the fourth equation by the third, to eliminate h and k:
88/50 = 2a²h / (2a² + 8ah) => 44/25 = h / (a + 2h)
792/450 = 2b²k / (2b² + 8bk) => 44/25 = k / (b + 2k)
Then, we rearrange the equations to obtain expressions for h and k in terms of a and b, respectively:
h = (44/25) * (a + 2h)
k = (44/25) * (b + 2k)
Multiplying both sides of each equation by 25/19, we obtain:
h = (44/19) * a
k = (44/19) * b
We can now check if the corresponding sides are proportional:
Base edge length = a:b = 1:3
Height = h:k = 1:3
Since the corresponding sides are proportional, the two octagonal prisms are similar.
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1) Consider the quadratic function: f (x) = (x + 3)2 – 2 and a function, g(x), which is created by translating
f (x) three units to the right, two units up, and reflected vertically over the x-axis. Complete the following tasks:
a) 15 points: Graph f (x) on the axes below and label it. Graph g(x) on the axes below and label it.
10 points: Write the vertex form equation for g(x) below.
A graph of f(x) is shown in the image below.
A graph of f(x) is shown in the image below.
The vertex form equation for g(x) is g(x) = -x²
What is a translation?In Mathematics and Geometry, the translation a geometric figure or graph to the right simply means adding a digit to the value on the x-coordinate of the pre-image while the translation a geometric figure or graph upward simply means adding a digit to the value on the y-coordinate (y-axis) of the pre-image.
Since the parent function is f(x)= (x + 3)² - 2, g(x) would be created by translating f(x) three units to the right, two units up, and reflected vertically over the x-axis as follows;
f(x) = (x + 3)² - 2
g(x) = -[(x + 3 - 3)² - 2 + 2]
g(x) = -x²
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