3 years ago

Please help! Solve for a.

Mathematics

1 answer:

Marat540 [252]3 years ago

3 0

What am I solving? Like what is the question?

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Amelia drives 10 miles in 20 minutes. If she drove three hours in total at the same rate, how far did she go? subquestion - how

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Answer:

Amelia drove 90 miles in 3 hours.

Step-by-step explanation:

she drove 10 miles in 20 minutes

we multiply this by 3, and get

30 miles in an hour ( 60 minutes)

then we multiply this by 3 and get

90 miles in 4 hours (180 minutes) :)

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3 years ago

The variable z is inversely proportional to x. When x is 16, z has the value 0.875. What is the value of z when x= 21?

ziro4ka [17]

For $z$ and $x$ to be inversely proportional, there must be some constant $k$ such that

$zx=k$

Given that $z=0.875$ when $x=16$ , it follows that

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Then when $x=21$ , we have

$21z=14\implies z=\dfrac{14}{21}=\approx0.667$

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Aaron gives an estimate of 2 for the quotient in a division problem his teacher says his estimate is reasonable if the divisor i

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B because it's the closest to 8

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3/8 + 1/8 - 1/3 + 1/4 =

Dahasolnce [82]

Answer:

0.41666666, to round up, the answer is 0.42

Step-by-step explanation:

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3 years ago

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an electric pole of height 25 m casts a shadow of 20 m.find the height of a tree, if it casts a shadow of 12 m under similar con

ikadub [295]

Answer:

9.6

Step-by-step explanation:

20 divided by 25 = 0.8

Then, 0.8 times 12 = 9.6

I bet that helped! :D

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3 years ago