Answer:
i don't know. sorry!
Step-by-step explanation:
2nd, 4th, and 5th answers are correct
10+2=12-06/6=6
Hope this helped you ^^
L*w=area
(3x+21)*w=3x^2+33x+84
w=(3x^2+33x+84)/3x+21
(3(x+4)(x+7))/3(x+7)
w=x+4
The value of x can be found using the sine function.
sin 30 = x/8
8 (sin 30) = x
4 = x