The answer to your question is D
Answer: 
Step-by-step explanation:
1. You have the following equation given in the problem above:
2. You must solve for n, as following:
3. Then, the result of the equation is:
4/8 equivalent =
8/16-
16/32-
32/64-
64/128
Answer:
40 mph.
Step-by-step explanation:
Suppose grandma's house is 30 miles away (any distance would do but 30 is convenient).
Speed = distance / time
time = distance / speed
Time to get there = 30/60 = 1/2 hour.
Time to get back = 30/30 = 1 hour
Average speed = total distance/ total time
= (30 + 30) / ( 1 + 1/2)
= 60 / 1.5
= 40 miles per hour.
You cannot take the average of the speeds directly
(60+ 30)/2 = 45 is not correct as you cannot average ratios ( speed is a ratio).
Answer:
84 degrees
Step-by-step explanation:
A right triangle is 90 degrees
90-4-2=84
