The angles of a triangle add up to 180 degrees
65 + 3x - 10 + 2x = 180
5x + 55 = 180
5x = 180 - 55
5x = 125
x = 125/5
x = 25 <====
m < B = 3x - 10 = 3(25) - 10 = 75 - 10 = 65 <== B is 65 degrees
m < C = 2x......= 2(25) = 50 <== C is 50
Y because if you add them you will get 10x =-10
The y will be eliminated because you have positive 3 -4
Answer:
in scientific notation = 2.58 × 10⁵
I hope I helped you^_^
5. -6a-48
6. 36x+4
7. 30n+40
8. 1.8m+2
Yess
