At the locations where the acceleration graph veers off, the particle changes course. It accelerates at positive slope acceleration graph intervals and decelerates during negative slope acceleration graph intervals.
At the locations where the acceleration graph veers off, the particle changes course. At these locations, the particle's acceleration is zero and the slope of the graph flip-flops from positive to negative. The particle changes direction at this point. The particle either speeds up or slows down in the intervals before and after the point of inflection. The particle is speeding up during the intervals where the acceleration graph has a positive slope, and slowing down during the intervals where the acceleration graph has a negative slope. We can determine how the particle is changing direction and whether it is speeding up or slowing down by examining the slope of the acceleration graph.
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hello can u please answer these questions
a) Work out the minimum number of hikers who could have walked between 8 miles and 19 miles. b) Work out the maximum number of hikers who could have walked between 8 miles and 19 miles.
The maximum and minimum number of hikers from the given frequency table are 17 and 4 respectively.
What is a frequency table?
One approach to display data is in a frequency table. To summarise bigger collections of data, the data are organised and counted. You can examine the distribution of the data across various values using a frequency table.
From the given frequency table, we can see that
Between 0 and 5 miles, there are 3 hikers
Between 5 and 10 miles, there are 4 hikers
Between 10 and 15 miles, there are 7 hikers
Between 15 and 20 miles, there are 6 hikers
Between 20 and 25 miles, there is only 1 hiker.
So the maximum number of hikers between 8 miles and 19 miles is the total number of hikers between 5 and 20 miles = 4 + 7 + 6 = 17
The minimum number of hikers who could have walked between 8 miles and 19 miles is 4 hikers.
Therefore the maximum and minimum number of hikers from the given frequency table are 17 and 4 respectively.
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The function y=f(x) is graphed below. Plot a line segment connecting the the points on f where x=5 and x=7. Use the line segment to determine the average rate of change of the function f(x) on the interval
Average rate of change is the change in the function per unit in a given interval. The average rate of change from x = 5 to x = 7 is -4.
What is the function?A relationship between a group of inputs and one output is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function. Typically, f(x), where x is the input, is used to represent a function.
Given, The graph of y = f(x)
See attachment for the points on f(x) that links x = 5 to x = 7
The line segment is represented by a green line
To determine the average rate of change using the line segment; we have the following values.
When x = 5: y = 8
When x = 7: y = 0
So, the average rate of change (m) is:
m = Δy/Δx
Where:
Δy = y₂ - y₁
Δy = 0- 8
Δy = -8
Δx = x₂ - x₁
Δx = 7 -5
Δx = 2
So, we have:
m = Δy/Δx
m = -8/2
m = -4
Hence, the average rate of change from x = 5 to x = 7 is -4
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Complete question:
|3y - 7| - 10 = -5 solve for y:
Answer: y=1.25
Step-by-step explanation:
First things first you have to find what is in the bracket things (i don’t know what it’s called) So 3 - 7 is -4y but since it’s absolute it’s going to be 4y.
So now you’ve got 4y - 10 = -5. Your going to want to eliminate 10 so, subtract 10 to both sides giving you 4y = -5
Lastly to get y by itself you need to divide it by its self so, 4y divided by 4. Do it to both sides. This gives you…
Y = 1.25
For the expression, write an equivalent expression that uses only addition.
The expressions using only addition are (a) 4x + (-7y) + (-5z) + 6 and (a) -3x + (-8y) + (-4) + (-8/7z)
How to determine the equivalent expressionExpression 1
From the question, we have the following expression that can be used in our computation:
4x - 7y - 5z + 6
When represented using only addition, we have
4x + (-7y) + (-5z) + 6
Expression 2
From the question, we have the following expression that can be used in our computation:
-3x - 8y - 4 - 8/7z
When represented using only addition, we have
-3x + (-8y) + (-4) + (-8/7z)
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The top selling brand of vape machines sold 10000 units at $89 per unit in 2018. what is their market share if the vape machine market had sales of $1.4M?
the time needed to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. answer the following questions.
The probability of a student completing the final examination in less than 65 minutes is 13.45%.
The time it takes to complete a final examination in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. This can be expressed mathematically as X~N(77, 12).
The probability of a student completing the final examination in less than 65 minutes can be calculated by using the Z-score formula:
Z = (x - μ) / σ
Where x = 65 minutes, μ = 77 minutes, and σ = 12 minutes.
Plugging these values into the formula, we get:
Z = (65 - 77) / 12 = -1.17
Using a Z-score table, we can find the probability of a student completing the final examination in less than 65 minutes, which is equal to 0.1345, or 13.45%. Therefore, the probability of a student completing the final examination in less than 65 minutes is 13.45%.
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Complete question :What is the probability of a student taking 90 minutes or less to finish the exam?
Swimming Pool On a certain hot summer's day, 445 people used the public swimming pool. The daily prices are $1.75
for children and $2.50 for adults. The receipts for admission totaled $964.75. How many children and how many adults
swam at the public pool that day?
250 adults and 195 children swam at the public pool on that day.
What is the system of linear equations?
A system of linear equations is a set of two or more equations that contain two or more variables. The goal is to find the values of the variables that will satisfy all of the equations in the system.
This is a system of equations problem. We can start by using two variables, x for the number of children and y for the number of adults, and then set up two equations based on the information given.
The first equation is for the total number of people: x + y = 445
The second equation is for the total amount of money collected: 1.75x + 2.5y = 964.75
We can now use the first equation to solve for one of the variables in terms of the other, and then substitute that expression into the second equation.
x + y = 445
x = 445 - y
Now we substitute x = 445 - y into the second equation
1.75(445 - y) + 2.5y = 964.75
after solving this equation we get
y = 250
x = 195
Hence, 250 adults and 195 children swam at the public pool on that day.
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Rotate this image 180° clockwise around the point (–2, 1):
The rotation of the image given 180° clockwise around the point (-2, 1) gives the image in the second option.
What is Rotation?Rotation is a kind of geometric transformation where a figure or point is rotated by a certain degrees about a given point.
The coordinates of the given image are :
(-1, 1), (-2, 1), (-1, 4) and (-2, 4).
Point of rotation is (-2, 1).
The points are not rotated around the origin.
To make it seem like around the origin, subtract the point of rotation from the points.
So the new points are :
(1, 0), (0, 0), (1, 3) and (0, 3)
Now rotate the image with the new coordinates around the origin 180° clockwise.
Rotation is -180°, which is equivalent to rotation of 180° counterclockwise.
Coordinates (x, y) when rotated 180° clockwise becomes (-x, -y).
New coordinates after rotation about origin are :
(-1, 0), (0, 0), (-1, -3) and (0, -3).
Now add the point of rotation (-2, 1) again.
Points are :
(-3, 1), (-2, 1), (-3, -2) and (-2, -2).
Image with these points is the second option.
Hence the required image is the second option.
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80 items to ship full case and 7 items per case
Answer: You want to ship 80 items, and each case holds 7 items. To find the number of cases needed to ship the 80 items, you can use the formula:
Number of cases = (Number of items) / (Items per case)
So in this case, the number of cases needed to ship 80 items is:
Number of cases = 80 / 7
Which simplifies to 11.428571428571429, so you will need 12 cases to ship 80 items.
Step-by-step explanation:
they police use a speed gun to monitor one part of a highway. During one hour, 6 out of 25 Cars we're traveling above the speed limit. what percent of the Cars were traveling above the speed limit?
explain how you solved it:
By taking a quotient we will see that the percent is 24%.
What percent of the Cars were traveling above the speed limit?The percent will be given by the quotient between the number of cars that have a speed above the speed limit, and the total number of cars (and we multiply that by 100%)
There are 25 cars in total, and 6 of these have a speed above the speed limit, then the percent is:
p = (6/25)*100% = 24%
So 24 percent of the cars are travelling above the speed limit.
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Match the polynomial to its correct name g(x)=5x^3
Answer:
Step-by-step explanation:
46
The units of an item available for sale during the year were as follows:
Jan. 1
Inventory
9 units at $39
$351
Aug. 13
Purchase
9 units at $41
369
Nov. 30
6 units at $42
252
Available for sale
24 units
There are 7 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the inventory cost usin
first-in, first-out (FIFO) method; (b) last-in, first-out (LIFO) method; and (c) weighted average cost method (round per-unit cost to two decimal
your final answer to the nearest whole dollar).
Purchase
a. First-in, first-out (FIFO)
b.
Last-in, first-out (LIFO)
c. Weighted average cost
Feedback
M
$972
41 X
Check My Work
a. When the FIFO method is used, costs are included in cost of goods sold in the order in which they were purchased.
b. When the LIFO method is used, the cost of the units sold is the cost of the most recent purchases.
c. The average cost method is sometimes called the weighted average method. The average cost method uses the average unit cost for dete
cost of goods sold and the ending inventory.
Answer: a. First-in, first-out (FIFO) method:
Under FIFO, the first units purchased are assumed to be the first units sold.
9 units were sold at $39 each for a total cost of $351
9 units were sold at $41 each for a total cost of $369
6 units were sold at $42 each for a total cost of $252
So the total cost of goods sold is $351 + $369 + $252 = $972
The 7 units remaining in inventory at the end of the year were purchased at $41 each, so their cost is 7*41 = $287
b. Last-in, first-out (LIFO) method:
Under LIFO, the most recent units purchased are assumed to be the first units sold.
6 units were sold at $42 each for a total cost of $252
9 units were sold at $41 each for a total cost of $369
9 units were sold at $39 each for a total cost of $351
So the total cost of goods sold is $252 + $369 + $351 = $972
The 7 units remaining in inventory at the end of the year were purchased at $39 each, so their cost is 7*39 = $273
c. Weighted average cost method:
Under the weighted average cost method, the average cost of all the units is used to determine the cost of goods sold and ending inventory.
The total cost of the units available for sale is $351 + $369 + $252 = $972 and the total number of units available for sale is 24. So, the average cost per unit is $972 / 24 = $40.50
The cost of goods sold is $40.50 * 24 = $970.
The cost of the units remaining in inventory at the end of the year is $40.50 * 7 = $283.50
Note: The final answers were rounded to the nearest whole dollar.
Step-by-step explanation:
Predict how many times you will roll a number less than 5 if you roll a standard number cube 250 times.
If you roll a standard number cube, the times you will roll a number less than 5 if you roll a standard number cube 250 times is 167
How to solved for the predictionGiven that this is a cube since there are three faces with numbers less than 5 (1, 2, and 3)
The result of multiplying the probability by the number of rolls is the expected number of rolls that will be fewer than 5. The number cube is being rolled 250 times.
we would have 2 / 3 * 250
= 166.66667
this is approximately 167
Hence the number of times that we would predict for the number is 167 times.
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Sandra saves 10% of her salary for retirement. This year her salary was $1,000 more than in the previous year, and she saved $5,000. What was her salary in the previous year?
Complete the equation. 0.10(x + ) = 5,000
Sandra's salary in the previous year was .
Sandra's last year salary was $24500
What is equation?An equation is a mathematical statement that shows that two mathematical expressions are equal.
Given that, Sandra saves 10% of her salary for retirement. This year her salary was $1,000 more than in the previous year, and she saved $5,000.
Let her previous salary be x, then according to question,
10% of x + 10% of 1000+x = 5000
x / 10 + (1000+x) / 10 = 5000
x + 1000 + x = 50000
2x = 49000
x = 24500
Hence, Sandra's last year salary was $24500
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Find three consecutive integers such that triple the sum of the first two integers is 19 less than larger integer
The three consecutive integers are given as follows:
-4, -3 and -2.
How to obtain the three consecutive integers?The three consecutive integers are obtained using a system of equations, for which the variables are given as follows:
x, y and z.
They are consecutive, thus:
y = x + 1.z = x + 2.Triple the sum of the first two integers is 19 less than larger integer, hence:
3(x + y) = z - 19
Replacing into the equation, the value of x is obtained as follows:
3(x + x + 1) = x + 2 - 19
6x + 3 = x - 17
5x = -20
x = -4.
Hence the remaining integers are -3 and -2.
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Line segment AB has endpoints A(-2,3) and B (2,1). Draw the line segment. Then draw the image of the line segment after a reflection over the x-axis.
The coordinates of the end points of the segment after the reflection over the x-axis are given as follows:
A'(-2,-3) and B'(2,-1).
The drawing is given by the image presented at the end of the answer.
How to apply the reflection over the x-axis?The rule for a reflection over the x-axis is given as follows:
(x,y) -> (x, -y).
Meaning that the x-coordinate remains constant, while the y-coordinate is exchanged.
Hence, changing the signal of the y-coordinate, the endpoints after the reflection are given as follows:
A'(-2,-3) and B'(2,-1).
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find the largest zero for the function below. f(x)=x^3-2x^2-3x
Answer: The zeros of the function f(x) are the values of x that make f(x) equal to zero. To find the zeros of the function, we can set f(x) equal to zero and solve for x.
f(x) = x^3 - 2x^2 - 3x = 0
One way to find the zeros of the function is to factor it:
x(x-3)(x+1)=0
Thus the zeros of the function are x=0, x=3, x=-1
The largest zero of the function is 3.
Another way to find the zeros of the function would be using synthetic division or other root-finding techniques like the Newton-Raphson method.
Step-by-step explanation:
I need help with this (a. b. and c.)
Answer:
Step-by-step explanation:
a. To find the percentage of the weight limit that 33 pounds is, we can use the following formula:
(Weight / Weight Limit) x 100 = Percentage
So, for 33 pounds:
(33 / 60) x 100 = 55%
b. To find the percentage of the weight limit that 114 pounds is:
(114 / 60) x 100 = 190%
c. To find what weight is 95% of the limit, we can use the following formula:
Weight Limit x (Percentage / 100) = Weight
So, for 95%:
60 x (95 / 100) = 57 pounds
Therefore, 95% of the weight limit is 57 pounds.
What is the value of n in the list above?
(1) k < n
(2) The median of the numbers in the list is 10.
A correct answer is an option (C); both statements together are sufficient.
Although k < n, no details are given about the value of k or n; not sufficient.
Since the median of the numbers in the list is 10 and there are 5 numbers in the list, 10 is one of these 5 numbers. Hence, n = 10 or k = 10. If n = 10, then the value of n has been decided. However, if k = 10, then n can be any number that is 10 or less, so the value of n cannot be found out; not sufficient.
Taking (1) and (2) together, if k < n and the median of the list are 10, then 12 and 17 are to the right of the median and the list in ascending order is either 6, k, n, 12, 17 or k, 6, n, 12, 17. In this case, n is the middle number, and since the median is 10, n = 10.
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The complete question is:
Given the list k, n, 12, 6, 17, What is the value of n in the list above?
(1) k < n
(2) The median of the numbers in the list is 10.
Which option is correct?
A) Statement (1) alone is sufficient, but Statement (2) alone is not sufficient.
B) Statement (2) alone is sufficient, but Statement (1) alone is not sufficient.
C) Both statements together are sufficient, but neither statement alone is sufficient.
D) Each statement alone is sufficient.
avin was reviewing a scatterplot and noticed several negative coefficients on the scatterplot. which of the following does that tell avin about the correlation coefficients?
A negative correlation coefficient indicates that as one variable increases, the other variable decreases. This means that the points on the scatterplot are spread in a downward direction, which suggests a negative correlation between the two variables.
A scatterplot is a graph that shows the relationship between two variables by plotting points that represent the values of the two variables. When reviewing a scatterplot, one can look for the correlation coefficient, which is a statistical measure that describes the strength of the relationship between the two variables. A negative correlation coefficient indicates that as one variable increases, the other variable decreases. This means that the points on the scatterplot are spread in a downward direction, which suggests a negative correlation between the two variables. A scatterplot with several negative coefficients indicates that the correlation between the two variables is negative, meaning that when one variable increases, the other one decreases. The strength of the correlation is determined by how close the points on the scatterplot are to the line of best fit. A strong negative correlation means that the points are close to the line of best fit and are spread in a downward direction, while a weak negative correlation means that the points are further away from the line of best fit and are spread in a more random pattern.
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What is the distance between the points (21, 12) and (6, 12) in the coordinate plane?
A.
27 units
B.
15 units
C.
9 units
D.
7.5 units
Answer: B: 15
Step-by-step explanation: I hope this helps!
Determine any point(s) of intersection of the equations algebraically. Then use a graphing utility to verify your results. y = x^2 - x + 1
The point of intersection will be the x, and y coordinates where the two lines cross.
To determine the point(s) of intersection algebraically, we need to find the solutions of the system of equations:
y = x² - x + 1
We can re-arrange the equation to solve for x:
x² - x + 1 - y = 0
We can then use the quadratic formula to find the solutions:
x = (1 ± √(1 - 4(1)(-y)))/2
x = (1 ± √(1 + 4y))/2
Now we can substitute values for y to find the x-coordinates of the points of intersection.
To verify the results, we can use a graphing utility to graph both equations and visually see where they intersect.
The point of intersection will be the x, and y coordinates where the two lines cross.
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Explain how a $45 Timex watch and a $10,000 Rolex watch deliver value to respective target markets? Which factors account for the dramatic difference in watch prices?
Brand and product quality are the factors account for the dramatic difference in watch prices.
What are Factors?The factors of production are resources that are the building blocks of the economy they are what people use to produce goods and services.
Given that the Timex watch is $45.
Rolex watch is $10000.
We have to find the factors account for the dramatic difference in watch prices.
The rolex watch quality is better than the Timex, so the price of Rolex watch is high compared to Timex.
The brand and product quality are the factors account for the dramatic difference in watch prices.
Hence, brand and product quality are the factors account for the dramatic difference in watch prices.
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A cross between a plant with flowers and a plant with white flowers yielded 47 plants with red flowers and 51 plants with white flowers. What are the genotypes of the parent plant? Explain
The result is close to the 1:1 ratio of red to white flowering plants, so the genotype must be Rr and rr. Option A is correct.
What is Law of DominanceMendel's law of dominance states that in a heterozygote, one trait will conceal the presence of another trait for the same characteristic.
According to this law, the offspring of the first generation from pure breed parents will show only dominant traits.
When a Heterozygous dominant parent mates with a pure recessive parent the ratio of the dominant and recessive characters will be 1:1.
The cross:
r r
R Rr Rr
r rr rr
Therefore, the result is close to the ratio of red to white flowering plants, so the genotype must be Rr and rr.
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The complete option are:
A. The results are close to a 1:1 ratio of plants with red flowers to plants with white flowers. Therefore, the genotypes of the
Rr and ir
B.
The results should yield plants with red flowers and plants with white flowers in a 3:1 ratio due, so the geneotype of each parent is Rr.
The number of offspring was not large enough to produce the expected results
C. The results differ from the predicted values. Therefore, the genotypes of the parents cannot be determined.
D
. The results should show a ratio of 3 plants with white flowers to 1 plant with red flowers, so the genotypes of the parent plants are RR
Solve the equation for all real values of x.
3 tan²x =√3 tanx
The trigonometric equation has the following roots: x₁ = ± i · π, x₂ = π / 6 ± i · π, where i are integers. (Correct choice: D)
How to solve a trigonometric equation
Trigonometric equations are equations that involve trigonometric functions. Trigonometric functions are periodic trascendent functions. In this problem we must determine the roots of a trigonometric equations by means of algebra properties and trigonometric formulas:
3 · tan² x = √3 · tan x
3 · tan² x - √3 · tan x = 0
tan x · (3 · tan x - √3) = 0
The roots of the equation are tan x = 0 or tan x = √3 / 3, whose angles are: x₁ = ± i · π, x₂ = π / 6 ± i · π, where i are integers.
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A parachutist's rate during a free fall reaches 60 meters per second. What is this rate in feet per second? At this rate, how many feet will the parachutist fall during 2 seconds of free fall? In your computations, assume that 1 meter is equal to 3.3 feet. Do not round your answers.
Answer:
Question 1.) The rate is 198 feet per second.
Question 2.) The parachutist will fall 396 feet in 2 seconds of free fall.
Step-by-step explanation:
We have to first convert 60 meters into feet.
According to the question, we know that 1 meter is 3.3 feet. So use this equation to get 60 meters into feet.
3.3 x 60 = 198
This is in 1 second of free fall. We have to find 2 seconds of freefall so we multiply this by 2.
198 x 2 = 396 feet in 2 seconds of free fall.
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anna buys bananas grapes and apples she buys twice the amount of bananas as grapes she buys 2 more pounds of apples than grapes all together anna bought 14 pounds of fruit how many pounds of each fruit did she buy
The amounts of each fruit that Anna bought is given as follows:
Bananas: 6 pounds.Grapes: 3 pounds.Apples: 5 pounds.How to obtain the amounts?The variables for the system of equations are given as follows:
Variable x: amount of bananas.Variable y: amount of grapes.Variable z: amount of apples.She buys a total of 14 pounds, hence:
x + y + z = 14.
She buys twice the amount of bananas as grapes, hence:
x = 2y.
She buys 2 more pounds of apples than grapes, hence:
z = 2 + y.
Then the amount of grapes can be obtained as follows:
x + y + z = 14.
2y + y + 2 + y = 14
4y = 12
y = 3 pounds.
Then the remaining amounts are given as follows:
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light and sound waves quick check 1 of 51 of 5 items question a ringing alarm clock is put under a glass jar. the air is slowly removed from the space around it. what will happen as the air is removed? (1 point) responses the appearance of the clock will not change, but its sound will become fainter. the appearance of the clock will not change, but its sound will become fainter. the clock will slowly become less visible, until you can only hear it. the clock will slowly become less visible, until you can only hear it. the clock will slowly become quieter and will ultimately fade from view. the clock will slowly become quieter and will ultimately fade from view. the appearance of the clock and the sound of the clock will not change.
Answer:
c
Step-by-step explanation:
The sound of the alarm clock will become fainter as the air is removed from the space around it. As the air is removed, the sound waves will be unable to travel and will become more and more muffled until you can only hear a faint sound from the clock. The appearance of the clock will not change.
As the air is slowly removed from the space around an alarm clock, the sound of the clock will become fainter. This is because the sound waves will be unable to travel properly through the airless space, and will become more and more muffled until you can only hear a faint sound from the clock. The appearance of the clock will not change, however. This phenomenon is caused by sound waves being unable to travel through airless spaces, which is why sound can be muffled when you cover your ears or put something between you and the sound source. Although the clock will become quieter and its sound will become fainter, the appearance of the clock will remain the same.
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What is 28/50 in the simplest form
Answer:
Exact Form:
14/25
Decimal Form:
0.56
Step-by-step explanation:
ch 7- a student investigating study habits asks a simple random sample of 16 students at her (large) high school how many minutes they spent on their english homework the previous night. suppose the actual parameter values for this variable are m=45 minutes and sd=25 minutes. which of the following best describes what we know about the sampling distribution of means for the student's sample?
The standard deviation of the sampling distribution of the mean is d)3.75; the distribution is approximately Normal.
According to the Central Limit Theorem, when the sample size is large enough (typically n > 30), the sampling distribution of the mean will be approximately normal, regardless of the shape of the population distribution.
In this case, the sample size is 16, which is larger than 30, so we can assume that the sampling distribution of the mean is approximately normal.
The standard deviation of the sampling distribution of the mean (also known as the standard error) is given by:
σm = σ/ √n
where σ is the population standard deviation and n is the sample size.
Plugging in the given values:
σm = 15/ √16 = 15/4 = 3.75
So the standard deviation of the sampling distribution of the mean for the student's sample is 3.75 minutes.
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