Question

16. Evaluate the expression below if
a = -8, b = 17, and c = 21
az - (b + c)

Answer 1

(if for solving for z)

z= -4.75

Step-by-step explanation:

az-(b+c) [set equal to zero]

az-(b+c)=0

+(b+c) +(b+c)

az = (b+c) [now substitute the variables]

-8z = (17+21)

-8z = 38 [divide both sides by -8 to get z alone]

z = -4.75

Answer 2

do u have to find z? how do yk what z is?