Question

Evaluate each expression if x= -3, y= 8, and z= -416. y-(-5)18. -8 ÷ y

Answer 1

Given:

x = -3, y = 8, and z = -4

Let's solve the following:

• 17. xz

Substitute -3 for x and -4 for z.

We have:

`\begin{gathered} xz=(-3)\text{ }\ast\text{ (-4) = 12} \\ \\ xz\text{ = 12} \end{gathered}`

• 19. x + 11

Substitute -3 for x and evaluate.

We have:

`\begin{gathered} x\text{ + 11 = -3 + 11 = 8} \\ \\ x+11=8 \end{gathered}`

• 16. y - (-5)

Substitute 8 for y and evaluate.

We have:

`\begin{gathered} y\text{ - (-5) = 8 - (-5) = 8 + 5 = 13} \\ \\ y\text{ - (-5) = 13} \end{gathered}`

• 18. ,-8 ÷ y

Substitute 8 for y and evaluate

We have:

`-8/ y=-8/8\text{ = }-1`

ANSWER:

xz = 12

x + 11 = 8

y - (-5) = 13

-8 ÷ y = -1