Question

Help me please i don't uderstand

Answer 1

(a) d = 2.1 (b) a = 8.7

Explanation:

`d^(2)+d^(2) = 3^(2)`

`2d^(2) = 9\\d = \sqrt[2]{9/2} = 2.1`

The hypotenuse = 5*2 = 10

`5^(2) + a^(2) = 10^(2)\\a^(2) = 100 - 25 = 75\\a = √(75) = 8.7`