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zheka24 [161]
3 years ago
12

Evaluate each expression. 3^-2

Mathematics
2 answers:
Rus_ich [418]3 years ago
7 0
9 is the answer negatives cancel out creating positve
Over [174]3 years ago
7 0
3^2 =  \dfrac{1}{3^2}  =  \dfrac{1}{9}
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2 years ago
|9x-7|=|6x+3| Solve the inequality
dexar [7]

Answer:

x = 4/15 and x= 10/3

Step-by-step explanation:

|9x-7|=|6x+3|

There are two solutions, one positive and one negative.

(9x-7)=6x+3                   - (9x-7)=6x+3

We will take the positive one first

(9x-7)=6x+3

Subtract 6x from each side

(9x-6x-7)=6x-6x+3

3x -7=3

Add 7 to each side

3x-7+7 = 3+7

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Divide by 3x/3 = 10/3

x = 10/3


Now we will take the negative solution

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Distribute the negative sign

-9x+7 = 6x+3

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