80-64=24
24 is 30% of 80 so a decrease of 30%
Answer:
m - i = r
Step-by-step explanation:
In this question, you are solving for "r".
Solve:
M= i + r
We have to get "r" by itself, so subtract "i" from both sides.
m - i = r
Since we found what "r" is, we can't solve any further.
m - i = r would be your answer.
Answer:
x-3=x+12
Step-by-step explanation:
because some number is x minus 3 would be x-3 is equal to so put an equal sign the product of the number x and 12
Answer:
Total rainfall in one month 
inches
Step-by-step explanation:
The total rainfall around an year is equal to 
inches
There are 12 months in an year.
Total rainfall in one month is equal to total rainfall in an year divided by number of months
Total rainfall in one month
inches
Let x be the time she ran and y be the time she walked
then distance ran = 25x and distance walked = 5y
so 15x + 5y = 42
and x + y = 4
* second equn. by -5:-
-5x - 5y = -20
add this to the first equn:0
10x = 22
x = 2.2
distance she ran = 2.2 * 15 = 33 km
