Answer:
-x^2 + 21x + 3.
Step-by-step explanation:
9x - (x – 3)(x + 1) + 10x
= 19x - (x^2 - 2x - 3)
= -x^2 + 2x + 19x + 3
= -x^2 + 21x + 3.
9514 1404 393
Answer:
D
Step-by-step explanation:
The formula for the area of a segment is ...
A = 1/2r²(θ -sin(θ))
for radius r and central angle θ.
Here, we have θ = π/2, so this becomes ...
A = 1/2r²(π/2 -1) . . . . . matches choice D
We know that
volume of a right circular cylinder=pi*r²*h
where
r ----> is the radius
h---> is the height
in this problem
r=6 cm
h=?
Volume=550 cm³
so
V=pi*r²*h------> h=V/[pi*r²]----> h=550/[3.14*6²]----> h=4.87 cm
<span>Round to the nearest tenth
</span>h=4.9 cm
the answer is
4.9 cm
Answer:
It’s b
Step-by-step explanation:
