Answer:

Step-by-step explanation:
We want to rewrite

in the form

We expand to get:

Regroup similar terms:

Simplify:

This is now of the form

where a=23.75 and b=76.24
Answer:
52
Step-by-step explanation:
3^3+3(3)^2-7(3)+19
27+27-21+19
54-2
52
Hope this helps
Answer:
7
Step-by-step explanation:
8x-2y=48, replace y with 4, 8x-2(4)=48, multiply, 8x-8=48, add 8 to both sides to remove the -8, 8x=56 and finally divide by 8 to remove 8 from x, x=7.
30meters i think but you should to be sure use formula base times height