10x=180
x=18
Angle B: 18(6)=108
Angle A: 18(2)=36
Angle C: 18(2)=36
**Angle C would equal 36**
72 because 12times 4 is 48 then 3/2 times 48 and that is 144/2 then divide it and 72
The answer is D
x-2y = 10
Solve for x:8 (13 - 6 x) + 6 x = 0
8 (13 - 6 x) = 104 - 48 x:
6 x + 104 - 48 x = 0
6 x - 48 x = -42 x:
-42 x + 104 = 0
Subtract 104 from both sides:
(104 - 104) - 42 x = -104
104 - 104 = 0:
-42 x = -104
Divide both sides of -42 x = -104 by -42:
(-42 x)/(-42) = -104/(-42)
(-42)/(-42) = 1:
x = -104/(-42)
The gcd of 104 and -42 is 2, so -104/(-42) = -(2×52)/(2 (-21)) = 2/2×(-52)/(-21) = (-52)/(-21):
x = (-52)/-21
Multiply numerator and denominator of (-52)/(-21) by -1:
Answer: x = 52/21
Surface area: 765.6 cm^2
Volume: 94.2 cm^3
