Please help i so t understand

Step-by-step explanation:

a=2

b=-4

lxl=absolute values

absoulte values are the distance away from 0.

In this case the absolute value of -4, is 4.

Plug in the values:

(sqrt 2^3-7)+l-4l

(sqrt8-7) +4

(sqrt1)+4

1+4

5

Exact Form: 2 sqr root 2 -3  Decimal Form: -0.171578287

Step-by-step explanation:

Hope this helps!!! :)

its 4 because 2 times 2 is 4, if you double the number two you get four

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: