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Nadusha1986 [10]
2 years ago
13

Simplify the expression 9^7/ 9^9 60 points

Mathematics
1 answer:
KATRIN_1 [288]2 years ago
5 0

Answer:

1/9^2

Step-by-step explanation:

simplify

9^(7-9)

simplify further

9^-2

simplify even more

1/9^2

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Please help me with this problem!!!
Lilit [14]

3  {}^{4x  - 5}  = ( \frac{1}{27} ) {}^{2x + 10}  \\ note  \: \: that =  \\ ( \frac{1}{27} ) = ( \frac{1}{3 {}^{3} } ) = 3 {}^{ - 3}  \\  \\ 3 {}^{4x - 5}  = (3 {}^{ - 3} )  {}^{2x + 10}  \\ 3 {}^{4x + 5}  = 3 {}^{ - 3(2x + 10)}  \\ equal \:  \: bases =  > equal \: exponents

4x - 5 =  - 3(2x + 10) \\ 4x - 5 =  - 6x - 30 \\ 4x  + 6x =  - 30 + 5 \\ 10x =  - 25 \\ x =   - 2.5

7 0
2 years ago
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8 0
2 years ago
Devon purchased tickets to an air show for 9 adults and 2
Vladimir79 [104]

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Step-by-step explanation:

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6 0
3 years ago
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what is the equation of the line that passes through the points (-2,1) and (1,10)? a) 3x-y=-7 b)3x-y=-5 c)3x-y=5 d)x 3y=-5
Ber [7]
The answer is a.
Substitute (-2,1) and (1,10) into each answer. Only a is correct because you will get -7 from both points.
8 0
3 years ago
X<br> 50<br> 50<br> X =<br> degrees<br><br> Please help with this problem I am going crazy
sveta [45]

Answer:

x=80°

Step-by-step explanation:

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