Answer:

Step-by-step explanation:
Using the rule of exponents
×
=
, then
×
=
= 
V=hpir^2
tricky, they didn't give us radius
they just gave circiufmerece
c=2pir
25.12=2pir
divide by 2 both sides
12.56=pir
divide by 3.14 both sides
4=r
subsitutet
v=hpir^2
v=66pi4^2
v=66pi16
v=1056pi
v=3315.84 cubic inches
✽ Hello there! ✽
4x+9<21
Move all the constants (numbers) to the right, using the opposite operation:
4x<21-9
4x<12
Divide both sides by 4 to isolate x:
x<3
<h2>Therefore, x<3 ✔︎</h2>
Hope this helps!
~Just a felicitous girlie
#HaveASplendidDay

Answer:
just typed the whole in mathaway.com
Step-by-step explanation:
it's a better app for quadratic equation and you can use it on a school computer
Answer:
I would go with the second one.
Step-by-step explanation: