Answer:
The answer is D: x (Squared) + 4x - 21.
Step-by-step explanation:
(X-3)(x+7)
First you multiply the first x by x, to get x squared. Then you multiply the first x by 7 to get 7x.
Next you multiply the -3 by the second x, to get -3x. Then you multiply the -3 by the 7 to get -21.
Written in order it would look like:
X (squared) + 7x -3x -21
You can combine the 7x and the -3x because they are like terms. This would leave you with:
x (squared) + 4x - 21
A) 3.45 x 10^2
B) 2 x 10^-7
1. B and D
2.A
I hope this helped, woof.
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
