Answer:
x = 15
Step-by-step explanation:
The sum of the angles in a triangle is 180º
3x + 5x + 4x = 180
Combine like terms
12x = 180
Divide both sides by 12
x = 15
C = 5x
C = 5 * 15
C = 75º
Answer: Divide 6/42 by 6/6 to get 1/7
Step-by-step explanation: To find the numerator when dividing by 6/6, divide 6/6 to get 1. To find the denominator, divide 42/6 to get 7.
= 8 21/40
= 8 + 21/40
= 8/1 + 21/40
= (8/1 * 40/40) + 21/40
= 320/40 + 21/40
= 341/40
= 341 ÷ 40
= 8.525
Answer:
X=66
Step-by-step explanation:
114+x=180
X= 66
