Answer:
8.2
Step-by-step explanation:
Use cosine law:
BC² = 7² + 9² - 2(7)(9)cos(60)
BC² = 67
BC = sqrt (67)
BC = 8.1853
BC = 8.2 (nearest tenth)
Answer:
180 degrees is the answer.
Mark me Brainliest!
Answer:
11
Step-by-step explanation:
i don't know
Subsitute 9 for y
9=y=9x-9
add 9 to both sides
9+9=9x+9-9
18=9x+0
18=9x
divide by 9
2=x
y=9
x=2
Answer:
911.25 I'm sooooooo sory if wrong
I thank I'm right
