7r=-7/2
divide both sides by 7 to get r by itself
(7r)/(7) = (-7/2)/(7)
if you don't quite see it, think of multiplying both sides by 1/7 instead (its the same thing as dividing by 7)
(7r)*(1/7)=(-7/2)*(1/7)
r=-1/2
Answer: 79=8h +22
Step-by-step explanation: 79 total needed 8h equals 8 times her hourly earning plus 22 what she already haves should equal 79.
9p + 3p and 2 -2 that is it
8 is the distance between the two points
Answer:
We will $ 6.25 of interest every 30 days.
Step-by-step explanation:
Please notice that a month equals 30 days and that earning due to interests will be only effective after each 30th day. The simple interest formula is defined by the following formula:
(1)
Where:
- Borrowed money, measured in monetary units.
- Simple interest rate, measured in percentage.
- Number of periods, measured in months.
- Interested gain due to borrowed money, meausred in monetary units.
If we know that 
, 
and 
, then the interest earned is:
We will $ 6.25 of interest every 30 days.
