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bulgar [2K]
3 years ago
8

Simplify 9^2 over 9^7

Mathematics
1 answer:
Illusion [34]3 years ago
3 0
1/59049 !!!!!!!!!!!!!!!!!!!!
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Please help I’m struggling on this question.
timofeeve [1]

Answer: \frac{2(y^2-4y+40)}{(y-8)(y+4)}

Step-by-step explanation:

To solve this problem, we want to make sure the denominators are the same on both fractions. Once they are equal, we can dd them together.

\frac{y+4}{y-8} +\frac{y-8}{y+4}                      [multiply first fraction by y+4 and second by y-8]

\frac{(y+4)(y+4)}{(y-8)(y+4)} +\frac{(y-8)(y-8)}{(y-8)(y+4)}   [distribute by FOIL]

\frac{y^2+8y+16}{(y-8)(y+4)} +\frac{y^2-16y+64}{(y-8)(y+4)}   [add numerator]

\frac{y^2+8y+16+y^2-16y+64}{(y-8)(y+4)}         [combine like terms]

\frac{2y^2-8y+80}{(y-8)(y+4)}                       [factor out 2 from numerator]

\frac{2(y^2-4y+40)}{(y-8)(y+4)}                  

Now we know that \frac{2(y^2-4y+40)}{(y-8)(y+4)} is the factored form after adding.

5 0
3 years ago
One number is 8 times as large as another. Their difference is 21. What is the larger number?
tigry1 [53]
<h3>Answer:  24</h3>

Explanation:

x = smaller number

8x = larger number, since it's 8 times larger than the smaller

8x-x = 7x = difference of the numbers

That difference is 21, so we can say 7x = 21 which solves to x = 3

The smaller number is 3 and the larger is 8x = 8*3 = 24

As a check: 24-3 = 21, which confirms the answer.

3 0
3 years ago
Read 2 more answers
What is the area and perimeter of this shape? I need help!!
cluponka [151]

The area of that shape is: 200 cm

The perimeter of that shape is: 72 cm

7 0
3 years ago
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How tall is the tree?<br> 5ft<br> 35°<br> -20ft-<br> [? ]ft
SVEN [57.7K]

Answer:

  • \boxed{\bf 19ft}

Step-by-step explanation:

\bf tan\:\theta =\cfrac{opp}{adj}

\bf tan(35^o)=\cfrac{x}{20}

\bf 20\;tan (35^o)=x

\bf 14ft=x

<u>The height of the tree:-</u>

  • \bf x+5ft
  • \bf 14ft+5ft
  • \bf 19ft
3 0
2 years ago
Read 2 more answers
F(x)= \frac{ \sqrt{x-6} }{ \sqrt{x-4}
Bingel [31]

Answer:

Hi!

Step-by-step explanation:

i would love to help you, but i don't quite understand the question.

Could you please tell me so i can better help you?

8 0
3 years ago
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