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Ad libitum [116K]
3 years ago
15

The following sample of bivariate (x, y) data concerning the speed of a car (in miles per hour; MPH) and the corresponding fuel

economy (in miles per gallon; MPG). Use this data to answer the following:
Speed (MPH)

30

40

50

60

70

Fuel Economy (MPG)

31

31

33

32

27



Calculate the correlation coefficient (r) and the line of best fit (y) for the given data set.

What is the best predicted fuel economy (MPG) for the given speed of 55 miles per hour? Show all work to receive credit and provide your reasoning.

Based on the sample data, is it appropriate to predict the fuel economy (MPG) for a given speed of 20 miles per hour? Explain your reasoning.
Mathematics
1 answer:
Licemer1 [7]3 years ago
8 0

Answer:

For the answer to the question above, the answer to this question is the last one among the given choices which is D. 0.18 mpg/mph

Simply because  

(34.8 - 33)  

(50-400)

1.8 / 10

Step-by-step explanation:

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An animal shelter spends $1.50 per day to care for each cat and $3.50 per day to care for each dog. Gianna noticed that the shel
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Answer:

2 cats were cared for

Step-by-step explanation:

c= cats

d=dogs

c+d =7

1.5c+3.5d=20.50

c+d =7

solve for d

d = 7-c

substitute into 1.5c+3.5d=20.50

1.5 c + 3.5 (7-c) = 20.50

distribute

1.5c +24.5 -3.5 c = 20.5

combine like terms

24.5 -2c =20.5

subtract 24.5 from each side

-2c = -4

divide by -2

c =2


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3 years ago
A sphere has a diameter of 14 units. what is the volume of the sphere in cubic units ? If a cylinder have the same radius as th
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Answer:

Therefore, the volume of sphere is 1436.03 cubic units.

Step-by-step explanation:

8 0
3 years ago
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A 66-meter garden row is divided into 44 equal-sized sections to plant onions.
Gwar [14]
You may represent this multiple ways.

1. 66/44 = m

2. 44m = 66

In both of these scenarios you have a total and equal parts.

The first one starts with a total and breaks it into equal parts.

The second choice shows 44 groups of a part totaling 66 meters.
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3 years ago
How much do you save per class by taking the longer-term class: Weight Training, $200 for 18 weeks (54 classes) or $350 for 36 w
Vsevolod [243]

<u>Shorter term class:</u>

You pay $200 for 54 classes in total. So,

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<u>Longer term class:</u>

You pay $350 for 108 classes in total, So,

\frac{350}{108} =3.241 dollars per class (rounded to 3 decimal places)


Hence, by taking longer term classes, you save around 3.704-3.241=0.463 dollars.

Rounding to 2 decimal places, you save $0.46 per class.


ANSWER: You save $0.46 per class.

5 0
3 years ago
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2(-2)+1 = -3
2(-1)+1 = -2
2(0)+1 = 1
2(1)+1 = 3
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Plot points on graph then draw line
5 0
3 years ago
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