Which equation can be used to find the volume of the cylinder?
1 answer:
Answer:
b
Step-by-step explanation:
usually you have to always multiply you radius first
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X+y=3
xy=-30
x+y=3
minusx
y=3-x
sub
x(3-x)=-30
3x-x^2=-30
times -1 both sides
x^2-3x=30
minus 30 both sides
x^2-3x-30=0
use quadratic
for
ax^2+bx+c=0
x=
![\frac{-b+/- \sqrt{b^2-4ac} }{2a}](https://tex.z-dn.net/?f=%20%5Cfrac%7B-b%2B%2F-%20%5Csqrt%7Bb%5E2-4ac%7D%20%7D%7B2a%7D%20)
1x^2-3x-30=0
a=1
b=-3
c=-30
x=
![\frac{-(-3)+/- \sqrt{(-3)^2-4(1)(-30)} }{2(1)}](https://tex.z-dn.net/?f=%20%5Cfrac%7B-%28-3%29%2B%2F-%20%5Csqrt%7B%28-3%29%5E2-4%281%29%28-30%29%7D%20%7D%7B2%281%29%7D%20)
x=
![\frac{3+/- \sqrt{9+120} }{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%2B%2F-%20%5Csqrt%7B9%2B120%7D%20%7D%7B2%7D%20)
x=
![\frac{3+/- \sqrt{129} }{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%2B%2F-%20%5Csqrt%7B129%7D%20%7D%7B2%7D%20)
the numbers are
![\frac{3+ \sqrt{129} }{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%2B%20%5Csqrt%7B129%7D%20%7D%7B2%7D%20)
and
Answer:
x=14
Step-by-step explanation:
3x-6=2(x+4)
3x-6=2x+8
+6 +6
3x=2x+14
-2x -2x
x=14
Answer:
Step-by-step explanation:
Answer:
I believe your answer is 252 m
hope this helps
Step-by-step explanation:
Answer: R
Step-by-step explanation: