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3 years ago

Joesphine scored 95, 84, and 87 on three math tests. She wants her average score for 5 tests to be at least 90.

Mathematics

1 answer:

attashe74 [19]3 years ago

7 0

Answer:

The answer for part B is I think 92 and 92. And for part A she could get 97 and 97 as the test average would be 92.

Step-by-step explanation:

I kinda explained it in the answer yeah but I hope that helps.

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Liza is driving to her sister's house 360 miles away. After 4 hours, Liza is 2 3 of the way there.

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Liza is driving to her sister's house 360 miles away. After 4 hours, Liza is 2/3 of the way there. How many more hours does Liza have to drive?

Answer:

Liza need to drive 2 more hours to reach her sister house

Solution:

Given that Liza is driving to her sister's house 360 miles away

So total distance = 360 miles

After 4 hours, Liza is 2/3 of the way there.

$\frac{2}{3} r d \text { of total distance }=\frac{2}{3} \times 360=240$

So Liza has covered 240 miles in 4 hours

Let us find the speed

The relation between distance and speed is given as:

$speed = \frac{distance}{time}$

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Thus speed = 60 miles per hour

Assuming speed is same throughout the journey, let us calculate the time taken to complete remaining distance

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