Answer:
x = 18
Step-by-step explanation:
the sum of any exterior angle is equal to the sum of any two interior angles
3x-11 + 5x+14 = 9x-15
8x + 3 = 9x - 15
3 = x - 15
x = 18
Answer:
Step-by-step explanation:
x =121.42
Answer:
53 packages
Step-by-step explanation:
Answer:
Option 2 is the correct answer.
Step-by-step explanation:
We know that

We have 1 mile = 5280 feet thus 6 miles = 31680 feet
Similarly 1 hour = 3600 seconds
Applying values in the equation above we get

Thus his average speed is less than 18feet/sec