Answer:
A) A = 4x^2 - x - 5
B) f(2) = 9
Step-by-step explanation:
area is L x W, so you multiply 4x - 5 with x + 1
A = (4x - 5)(x + 1)
which gives you
A = 4x^2 - x - 5
you would then plug in 2 for x which gives you your answer of
9
Hope this helps you :)
Answer:
Width = 12
Length = 58
Step-by-step explanation:
Width = x
Length = 4x + 10
Perimeter = 140
2 * ( length + width ) = 140
2 * (4x +10 + x) = 140
5x + 10 = 140/2 = 70
5x = 70- 10
5x = 60
x = 60/5 = 12
Width = 12
Length = 4 * 12 + 10 = 48 +10 = 58
Answer:
-5x
Step-by-step explanation:
The height of a semisphere is equal a radius of this hemisphere.
But... if we can talk about the height of the hemisphere ;)
R = 0.8m = 80cm then height of hemisphere is equal 0.8m = 80cm.
What triangle are you talking about?
