One of the legs of a right triangle measures 5 cm and the other leg measures 8 cm. Find the measure of the hypotenuse. If necessary, round to the nearest tenth.

9.4cm

Step-by-step explanation:

by pythagoras theorem,

a^2 + b^2 = c^2

5^2 + 8^2 = c^2

c^2 = 89

c = √89 = 9.433981 ≈ 9.4

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: