Answer:
140/221.
Step-by-step explanation:
For the triangle containing angle α:
The adjacent side is -√(13^2-5^2) = -12.
For the triangle containing angle β:
Hypotenuse = √(-8)^2 + (15)^2) = 17.
cos(α - β) = cos α cos β + sin α sin β
= ((-12/13) * (-15/17) + (-5/13)* (8/17)
= 180/221 + - 40/221
= 140/221.
206
The formula for this problem would be -310 + 13(8) which = 206
9
120=4x=6+7x+15
120=11x+21
-21 -21
99 ÷ 11x
AB=9
2(2b + m)
We can simplify the expression given in the question using factoring:
4b + 2m
(2 x 2)b + (2 x 1)m
Answer: B
