Answer:
-6.25
Step-by-step explanation:
6.25 - 9= -2.75.
-2.75-3.5= -6.25
Answer:
r = 7
Step-by-step explanation:
Given
r + 15 = 4r - 6 ( subtract 4r from both sides )
- 3r + 15 = - 6 ( subtract 15 from both sides )
- 3r = - 21 ( divide both sides by - 3 )
r = 7
Consider that 100%-72%=28% represents the percentage of wrong answers. I would think as fractions as:
if 100% is the total number of answers and 28% are the wrong ones
as
if x is the total you have 14 wrong you can write:

x=(100/28)*14=50 questions
Answer:

Step-by-step explanation:

0.2 miles per minute.
3.6 divided by 18 equals 0.2/