aubreejean1120 aubreejean1120

17-10-2020
Mathematics

contestada

solve for y
a. 7 cm
b. 20 cm
c. 14 cm
d. 10 cm

solve for y a 7 cmb 20 cmc 14 cmd 10 cm class=

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

17-10-2020

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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