3 years ago

Solve for y a. 7 cmb. 20 cmc. 14 cmd. 10 cm

Mathematics

1 answer:

Rainbow [258]3 years ago

7 0

Answer:

20 cm

Step-by-step explanation:

We can use ratios to solve

We know x = 7 since they are of equal length

x x+7

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

10 y

7 7+7

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

10 y

Using cross products

7y = 14*10

7y = 140

Divide by 7

7y/7 = 140/7

y = 20

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