Question

Given that triangle DEF is similar to triangle WXY, solve for x.

x = 10 cm

x = 12 cm

x = 15 cm

x = 19 cm

Answer 1

Set up a proportion.

Answer 2

\(\sf \dfrac{20}{4} = \dfrac{x}{3}\)

Answer 3

Cross multiply and solve for 'x'.

Answer 4

20 * 3 = ?
4 * x = ?

Answer 5

Can you multiply those?

Answer 6

The answer is fifteen. Thank you.

Answer 7

Yep, you got it.

\(\sf 60 = 4x\)

Divide 4 to both sides:

\(\sf x = 15\)

Answer 8

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