2n-5=7
Twice a number, n, is shown by multiply two and n. Then, you subtract this amount by five.
Step-by-step explanation:
-3(-x -3y) = 3( x +3y) = 3x+9y
60 percent because 3/5= 0.6 and multiply by 100 its 60
In △ABC, m∠A=15°, a=9, and b=10
We apply sine law




0.287576716 = sin(b)
b= 16.7129 degree
angle A= 15 degree, angle B = 16.71 degree
So angle C = 148.29


c= 
c= 18.28