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3 years ago

2 1/5 /10 = x/4, using proportions, solve for x, and explain.

Mathematics

1 answer:

lisov135 [29]3 years ago

4 0

Answer:

x = 22/25

Step-by-step explanation:

Given

2 1/5 x

---------- = -----------

10 4

Using cross products

2 1/5 * 4 = x*10

Change 2 1/5 to an improper fraction

2 1/5 =(5*2+1)/5 = 11/5

11/5 *4 = 10x

44/5 =10x

Multiply each side by 1/10 to isolate x

44/5 *1/10 = 10x * 1/10

44/50 = x

Divide top and bottom by 2

22/25 = x

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