Question

Find the missing length of the triangle.

Answer 1

the missing value is 12

Answer 2

There are special properties to certain right triangles.

A 3-4-5 triangle will always be a right triangle. 9 divides into 3, and 15 divides into 5, so you can use ratios to find b.

Since 9 divides into 3, we will use this to set up proportions for the missing value:


`(9)/(3) = (b)/(4)`

Cross multiply the fractions.


`3b = 36`

Divide both sides by 3.


`b = 12`

The missing value is 12.