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Lemur [1.5K]
3 years ago
12

2. Consider this scatter plot.

Mathematics
2 answers:
matrenka [14]3 years ago
5 0
(a) How would you characterize the relationship between the hours spent on homework and the test scores? Explain
 For this case what we see is that we have a scatter diagram, which we can model using a linear trend defining the following variables:
 x: number of hours studied.
 y: test scores.
 The linear relationship would be of the form:
 y = mx + b

 (b) Paul uses the function y = 8x + 40 to model the situation. What score does the model predict for 3 h of homework?

 y = 8x + 40
 For three hours of study we have that the note would be approximately:
 y = 8 * (3) + 40
 y = 64

 (c) What does the number 40 in Part (b) mean in the context of the situation?

 The number 40 means that if you do not devote any study time, then you expect the test score to be 40.
Anuta_ua [19.1K]3 years ago
3 0

a) The relationship is that the test score will increase, if the time spent on homework increases.

b) The function is y=8x+40, and what we need to see is what the score will be if someone puts in 3 hours of homework, x=3 in this because it means the time spent on homework: y=8(3)+40, then y=24+40=64.

c) The score would be 40% if no time was spent doing homework.

Hope this helps, have a BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

- Cutiepatutie ☺❀❤

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How can I estimate the value of 50.75 x 0.18? Thanks!
Lyrx [107]

Answer: The answer to your question is 50.75+0.18=9.135. I have nice day and hope this helps!




7 0
3 years ago
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In a sample of 66 cabinets, the average height was found to be 32.2in. with a standard deviation of 2.1. Give a point estimate f
andrew11 [14]

Answer:

2.10

Step-by-step explanation:

The point estimate for the population standard deviation of the height of the cabinets equals to the provided standard deviation of the cabinets. Rounding off the given standard deviation which is 2.1 to 2 decimal places as the question requires then the point estimate for the population standard deviation of the height of the cabinets is approximately 2.10 ( 2 decimal places)

7 0
3 years ago
Help as soon as possible pleaseee
KiRa [710]

Answer:

(3x + 2)(x-4)

Step-by-step explanation:

3x² - 10x - 8 = 0

(splitting the middle term)

3x² -12x + 2x -8 = 0

3x(x-4) + 2(x-4) = 0

(3x + 2)(x-4) = 0

(3x + 2)(x-4) is the correct answer (option a)

3 0
3 years ago
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The length of a rectangle is 4 yards less than 2 times the width. If the perimeter is 34 yards, find the length and the width of
tamaranim1 [39]

Answer:

21 yards

Step-by-step explanation:

4 0
2 years ago
3. Given the directed line segment AB, with endpoints A20, 6) and B(-16, 50), find the point Q
garri49 [273]

The point Q that partitions the line segment is Q(2,28)

Given that the directed line segment AB, with endpoints A(20, 6) and B(-16, 50) and divide the segment into a 1:1 ratio.

A line segment is a part of a line bounded by two distinct endpoints and containing all the points of the line segment between its endpoints.

We will find the point Q by using the section formula that is

Q(x,y)=((mx₂+nx₁)/(m+n),(my₂+ny₁)/(m+n))

The given ratio is m:n=1:1 and the points (x₁,y₁)=(20,6) and (x₂,y₂)=(-16,50).

Firstly, we will find the point Q for x-axis, we get

Q(x)=(mx₂+nx₁)/(m+n)

Q(x)=(1×(-16)+1×20)/(1+1)

Q(x)=(-16+20)/2

Q(x)=4/2

Q(x)=2

Now, we will find the point Q for y-axis, we get

Q(y)=(my₂+ny₁)/(m+n)

Q(y)=(1×50+1×6)/(1+1)

Q(y)=(50+6)/2

Q(y)=56/2

Q(y)=28

The point Q that partitions the line segment is Q(x,y)=(2,28)

Hence, point Q partitions this segment into a 1:1 ratio with directed line segment AB, with endpoints A(20, 6) and B(-16, 50) is Q(2,28).

Learn more about the line segment from here brainly.com/question/9034900

#SPJ9

8 0
2 years ago
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