(62+21+64+268+93+108+114+33+52)
———————————————————
9
=90.6
(If there is any more numbers sorry I can’t see them)
To find the mean u add them all then divide by how many there are
3x^3 -3x^2 -18x = 3x(x^2 -x -6) = 3x(x-3)(x+2) so the 3rd choice is right sure
hope helped
Answer:
10*15= 150
150 *8= 1,200
1,200 ÷ 2 = 600.
Step-by-step explanation:
The number 12, 2, 4, 6, and 8 goes in that number
Cos(2x) = cos^2(x) - sin^2(x) - cos(x)
but sin^2(x) = 1 - cos^2(x)
cos(2x) - cos(x) = cos^2(x) - (1 - cos^2(x) ) - cos(x)
cos(2x) - cos(x) = cos^2(x) - 1 + cos^2(x) - cos(x)
cos(2x) - cos(x) = 2cos^2(x) - 1 - cos(x)
cos(2x) - cos(x) = (2cos(x) + 1)(cos(x) - 1)
I think this is what you have asked for.
