Answer:
She has 44 stamps left
Step-by-step explanation:
For Right angled triangle area
A=ab/2
(2x-2)(4x+2)/2
(8x^2+4x-8x-4)/2
(8x^2-4x-4)/2 take common term 2
2(4x^2-2x-2)/2
So A=4x^2-2x-2
Answer:
4
Step-by-step explanation:
First, subtract 4 from both sides, then divide by 2 to isolate the variable.

Answer:
h = 20 in
Step-by-step explanation:
V = pi * r^ * h
628 = pi x 10 x h
628/(pi x 10) = h
h = 20