Question

Evaluate each expression if x=3 y=12 and z=8

4z+8-6=
7z divide by 4+5x=
y in the second power divide (3z)=

???????

Answer 1

34

56/19

6

Explanation:

∵ z = 8

∴ 4(8) + 8 - 6 =34

∵ x = 3

∴ 7z /(4 + 5x) = 7(8) ÷ (4 + 5 × 3) = 56 ÷ 19 = 56/19

∵ y = 12

∴ y² ÷ 3z = (12)² ÷ 3(8) = 144 ÷ 24 = 6