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3 years ago

5

A person leaves home at 8:00 a.m. and drives to a destination at a rate of 40 mph. The person returns at a rate of 25 mph and ar

rives at 2:30 p.m. How far was the destination?
65 miles
100 miles
130 miles

1 answer:

Svetlanka [38]3 years ago

8 0

100 miles... like I said before. Hope u do good on ur assignment/quiz ... :/

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Can anyone explain how to do this?

Aliun [14]

<h3>Answer: 85 units ^2</h3>

Step-by-step explanation:

Using the equation $a^{2} + b^{2} = c^{2}$

so $a^{2} = 35$ and $b^{2} =50$

$a^{2} + b^{2} = 85^{2}$

5 0

3 years ago

Read 2 more answers

7/2x + 1/2x + 5 1/2 + 92x <br> the value of x is..

jeka94

I'm not entirely sure what you mean but simplifying this expression results in 96x + 5 1/2.

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3 years ago

Jordan is running 5 miles for cross-country practice (track). She ran the first 2 miles in 12.5 minutes. How long will it take h

pochemuha

Answer:

31.25 minutes

Step-by-step explanation:

12.5 minutes divided by 2 (miles) = 1 mile per 6.25 minutes

6.25 x 5 = 31.25

6 0

3 years ago

PLEASE HELP ME ASAP! ILL GIVE YOU BRAINLEST!

Helen [10]

Answer:

13/99

Step-by-step explanation:

First convert the expression, turn 13 into 13/1: 13/1 × 1/99

Next you multiply: 13/1 × 1/99 = 13/99

4 0

3 years ago

Let x be normal distribution with mean 70 and standard deviation 2. given the following probability, p (x < a) = 0.9147, find

lapo4ka [179]

The value of a is 72.74.

<h3>What is Probability ?</h3>

Probability is the study of likeliness of an event to happen.

It is given that

The mean $\rm \mu$ of the distribution is 70

Standard deviation $\rm \sigma$ is 2

p( x<a) = 0.9147

a = ?

From Z table

For p ( p < 0.9147) , z = 1.37

$\rm Z = \dfrac { X - \mu}{ \sigma}$

$\rm \rm 1.37 = \dfrac { a - 70}{ 2}$

a = 70+ 2*1.37

a = 72.74

Therefore the value of a is 72.74.

To know more about Probability

brainly.com/question/11234923

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2 years ago