x + 84 = 4x
These are equal because they're vertical angles. Now, let's subtract x from both sides.
84 = 3x
Divide both sides by 3
28 = x
x + 84 = 28 + 84 = 112 degrees
Answer: C is the correct answer
Step-by-step explanation:
( 6 + ( 2 * x ) -3) = 2x + 3
Answer:
100 miles per 5 hour
Step-by-step explanation:
by the average speed of 20 miles per hour
it takes 5 hour average to cover 100 miles