for problem 6, you will want to subtract both sides by 5.
n^2 + 7n + 10 = 0
then factor:
(n + 5) (n + 2) = 0
n+ 5 = 0, n +2 = 0
n = -5, n = -2
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for problem 7, add - 12 and - 6 together
n^2 + 3n - 18
<em>(you can put </em>= 0 <em>next to the equation since that can make it easier to solve, I guess)</em>
n^2 + 3n - 18 = 0
then factor:
(n + 6) (n - 3) = 0
n + 6 = 0, n - 3 = 0
n = -6, n = 3
Answer:
<h2>1</h2>
Step-by-step explanation:
0.72/0.36 x 2
0.72/0.72
1
I'm always happy to help :)
2x + 3y = 26 -- equation 1
3x + 5y =40 -- equation 2
(Equation 1) * 3
6x + 9y = 78 -- equation 3
(Equation 2) * 2
6x + 10y = 80 -- equation 4
(Equation 4) - (Equation 3)
y = 2 -- equation 5
(Equation 5)'s value of y into (Equation 1)
2x + 3(2) = 26
2x = 20
x = 10
Thus x = 10 and y = 2
Hope that helps!
Answer:
r≈14.01cm
Step-by-step explanation:
r=C
2π=88
2·π≈14.00563cm
Sorry if im wrong.
Answer:
V=πr^2(h/3)
Step-by-step explanation:
V=π6^2(8/3)
