100/1 = 115/x
100x = 115
X = 115/100
X=1.15 hours
The 2 angles given are vertical angles , which mean they equal the same.
Set the 2 equations to equal each other and solve for x:
7x-26 = 5x +10
Add 26 to each side:
7x = 5x + 36
Subtract 5x from each side:
2x = 36
Divide both sides by 2:
X = 36/2
X = 18
Answer:
C
Step-by-step explanation:
Wrong answers and why:
A: it Is bigger than 180°
B: 180° is a straight line this one isn't straight
D: 150° Is too small
So C is the right answer