Ryan is 5 feet tall. his shadow 9 feet long and the shadow of a building is 36 feet long. how tall is the building?

x=20

Step-by-step explanation:

Step 1: Cross-multiply.

5/9=x/36

(5)*(36)=x*(9)

180=9x

Step 2: Flip the equation.

9x=180

Step 3: Divide both sides by 9.

9x=180

9x/9=180/9

x=20

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.