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2 years ago

The scatter plot shows the time spent watching TV, x, and the time spent doing homework, y, by each of 24 students last week.

Mathematics

1 answer:

evablogger [386]2 years ago

8 0

Answer:

y = - 0.833 + 29.5

y = 17

Step-by-step explanation:

Drawing a best fit line through the data points:

The approximate regression model would have an intercept of about 29.5

The slope = Rise / Run = (y2 - y1) / (x2 - x1)

The slope = (5 - 25) / (27 - 3) = 20 / 24 = -0.8333

The regression equation is thus :

y = mx + c

m = slope ; c = intercept

y = - 0.833 + 29.5

x = 15

y = - 0.833(15) + 29.5

y = -12.5 + 29.5

y = 17

Approximately 17 hours watching TV

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Vika [28.1K]

Answer:

30'000 gallons approx

Step-by-step explanation:

day 2 - 500,000 gallons

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8 0

2 years ago

Solve for x: 1+4x=13+x

topjm [15]

ANSWER
x = 4

EXPLANATION
1) 1+4x = 13+x

2) 1+3x = 13

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2 years ago

Solve the system by graphing.

olya-2409 [2.1K]

Option A: (0,2) is the correct answer

Step-by-step explanation:

the given equations are linear equation.

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Given equations are:

$y = x+2\\y = -2x+2$

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The lines intersect at: (0,2)

Hence,

Option A: (0,2) is the correct answer

Keywords: Linear equations

Learn more about linear equations at:

#LearnwithBrainly

3 0

2 years ago

Can somebody tell me the answer for these two questions or just the top one please

stepladder [879]

Answer:

V = 268.08 in^3

Step-by-step explanation:

that answer was for the first question. I do not know the second one I'm very sorry

6 0

2 years ago

Sasha buys two ribbons of equal length. She cuts 9 pieces of the same length, L, from the first ribbon and finds that 5 inches a

nikitadnepr [17]

Answer:

50 inches.

Step-by-step explanation:

Let the length of the each ribbon was x.

Now, she cuts 9 pieces of same length L which means total length is 9L.

Now, doing the same she was left with 5 inches of ribbon. Hence, we have

[tex[9L+5=x.....(1)[/tex]

Similarly, we can write a equation for the second situation.

$2L+40=x......(2)$

From equation 1 and 2,

$9L+5=2L+40\\\\7L=35\\\\L=5$

Plugging this value in equation 1,

$9(5)+5=x\\\\x=45+5\\x=50$

Therefore, the length of each ribbon when she bought them was 50 inches.

3 0

3 years ago