Question

PLEASE HELP!! I DON'T UNDERSTAND!!!!! I WILL MARK!!!!

Answer 1

Answer: 2

Explanation:

The question is asking you to substitute the b with 4 and find the solution to the expression.

`(1)/(2)b^(2) -6`

`=(1)/(2)(4)^(2) -6`

`=(1)/(2)(16) -6` (PEMDAS so you do the exponent first)

`=8 -6` (PEMDAS so you do the multiplication first)

`=2`

Answer 2

2

Explanation:

first use order of operations.

1/2(4^2)-6

1/2*16-6

then simplify to get:

8-6=2