Answer:
Step-by-step explanation:
<u>Variable: </u>
<u>Equation:</u>
<u>Solution:</u>
- 5(3p + 0.97) = 12.89
- 15p + 4.85 = 12.89
- 15p = 12.89 - 4.85
- 15p = 8.04
- p = 8.04 / 15
- p = 0.536
-9/4v + 4/5 = 7/8;
First, you subtract 4/5 from each side to have variable v on a side and numbers on the other:
-9/4v = 7/8 - 4/5;
-9/4v = 35/40 - 32/40;
-9/4v = 3/40;
Then you divide each side to get the variable v alone on a side, and one number on the other:
V= (3/40) / (-9/4);
Dividing to fractions is equal to multiplying the first one by the inverse of the second:
V= (3/40) * (-4/9);
V= -12/360;
V= -1/30;
You can re-check your answer (very important):
(-9/4)*(-1/30)+4/5=7/8;
The answer has been approved.
Hope this helps! :)
Answer:
7 5/12
Step-by-step explanation:
5 1/4 + 3/4 + 1 5/12
We can add the first two terms
5 1/4 + 3/4
5 4/4
6
6 + 1 5/12
7 5/12
Answer:
15 seconds
Step-by-step explanation:
Because the split id 25% and 75%, we could create another average pretending that there are four kids, one who ran in 12 seconds, and three who ran in 16.
Equation for averages: (a₁ + a₂ + a₃ + ... 
)/ n
Plug in:<em> (12 + 16 + 16 + 16)/4</em>
Add: 60/4
Divide: 15 seconds
