Answer:

Step-by-step explanation:
To make this a bit easier to see, we'll expand that expression.
R to the 9th is just r times itself 9 times. R to the third is r times itself 3 times.
(excuse my bad formatting)
<u>The expression:</u>
<u>r • r • r • r • r • r • r • r • r • 1</u>
r • r • r • 1
Remember, anything and everything has a coefficient or denominator of 1.
So, we can cancel 3 r's from the numerator and denominator.
<u>r • r • r • r • r • r • 1</u>
1
Simplify....

That just equals
.
Answer:
7/9 = 42/n.
7n = 378,
n = 54.
Step-by-step explanation:
Answer:
undefined. No one knows the answer. ¯\_(ツ)_/¯¯
6.75 x 14 will get you 94.5 and if you add another 6.75 you will go to high for your goal so that answer is 14