Question

These triangles are similar. What is the value of x?
a 9
b 10
c 12
d 15

Answer 1

find the scale factor and set up a proportion

Answer 2

no f8cking idea how

Answer 3

well two shapes are similar if all their sides are in the same proportion. that means that \(\dfrac{AB}{DE}=\dfrac{CB}{FE}=\dfrac{AC}{DF}\)

Answer 4

and so we have \(\dfrac{6}{3}=\dfrac{x}{5}\)

Answer 5

im guessing 9

Answer 6

why are you guessing? just solve for x. have you not learned ratios yet?

Answer 7

i have

Answer 8

then solve for x. multiply both sides by 5 and 3

Answer 9

sank you :)

Answer 10

this feels like one of those dismissive, lazy thank yous so I'll just say the answer's 10

Answer 11

no lol i had a test to tale and i got it right thank you :)