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alexdok [17]
3 years ago
15

Which two ratios form a proportion? A 1/ 2 and 4/2 B.2/1 and 4/8 C.1/2 and 8/4 D.2/1 and 16/8

Mathematics
2 answers:
N76 [4]3 years ago
6 0

Answer:

Option D

Step-by-step explanation:

LEts check each option

Simplify the fraction and check whether they are equal

Option A: \frac{1}{2} =\frac{4}{2}

\frac{1}{2} =2. they are not equal

Option B: \frac{2}{1} =\frac{4}{8}

\frac{2}{1} =\frac{1}{2}. they are not equal

Option C: \frac{1}{2} =\frac{8}{4}

\frac{1}{2} =\frac{2}{1}. they are not equal

Option D: \frac{2}{1} =\frac{16}{8}

\frac{2}{1} =\frac{2}{1}. they are equal

wel3 years ago
4 0

Two ratios form a proportion if they are equal. If one fraction is equivalent to the other fraction, they form a proportion. To find out, reduce both fractions and see if they are equal.

A

1/2 and 4/2

Reduce 4/2 to 2/1.

1/2 and 2/1 are not equal.

1/2 and 4/2 do not form a proportion.

B

2/1 and 4/8

Reduce 4/8 to 1/2.

2/1 and 1/2 are not equal.

2/1 and 4/8 do not form a proportion

C

1/2 and 8/4

Reduce 8/4 to 2/1.

1/2 and 2/1 are not equal.

1/2 and 8/4 do not form a proportion

D

2/1 and 16/8

Reduce 16/8 to 2/1

2/1 and 2/1 are equal.

2/1 and 16/8 form a proportion.

Answer: D. 2/1 and 16/8

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Tashia ate 1/3 of a pizza, and Jay ate 3/8 of the same pizza. What fraction of the pizza was eaten?
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If (x - 4) varies inversely as (y + 3) and x = 8 when y = 2, what is x when y = - 1?
denpristay [2]

Answer:

x=14

Step-by-step explanation:

If two values are inversely proportional, their product must be maintained. That way, if one value goes up, the other goes down by the same extent.

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