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Dmitrij [34]
3 years ago
5

PLEASE ANSWER ASAP!!! FULL ANSWERS ONLY!!!!!! WILL GIVE BRAINLIEST!!!!!!!!!

Mathematics
1 answer:
guajiro [1.7K]3 years ago
3 0

Answer:

4r + 4(r + 3) = 68

r = 7 miles per hour

r + 3 = 10 miles per hour

Step-by-step explanation:

distance = rate * time

a)

4r + 4(r + 3) = 68

Distribute

4r + 4r + 12 = 68

8r + 12 = 68

8r = 56

r = 7 miles per hour

r + 3 = 10 miles per hour

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Graph the equation y=.6 on the coordinate plane
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Step-by-step explanation:

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3 years ago
The heights (in cm) and arm spans (in cm) of 31 students were measured. The association between (height) and (arm span) is shown
sergeinik [125]

Answer: Mike's arm span is 7.165 cm longer than the George's one.

Step-by-step explanation:

We have that the association between height and arm span is modeled by the equation

y = 4.5 + 0.977*x

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and George is 165 cm tall, so his arm span is:

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Then the difference between their arm span is:

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So Mike's arm span is 7.165 cm longer than the George's one.

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3 years ago
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