Answer:
Probably a bit late but its A the first one ;P
Step-by-step explanation:
Its A
Other dude is right :).
81 = 9 * 9 = 3 * 3 * 3 *3
8 = 2 * 2 * 2 *2
Answer: 4 1/3 or 13/3
10x+2y
combine like terms
So this is an isosceles triangle so the other angle must be x too.
So:
x+x+40 = 180
2x+40 = 180
2x = 140
x = 70
x=25 degrees and the angles are vertical (opposite each other)
(4x-25)=75
4x=100
x=25
