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Arada [10]
3 years ago
15

Help me solve this please?

Mathematics
1 answer:
makkiz [27]3 years ago
8 0

Step-by-step explanation:

Simplify the following expression then state the property used:

9^-2

Property:

Given,

9^-2

For any real numbers a and b a, b ≠ 0, and for any two positive integers, n and n

a^-m

=> 1/a^m [By doing reciprocal]

So,

9^-2

=> 1/9^2

=> 1/(3^2)^2

=> 1/(3^4)

=> 1/(3*3*3*3)

=> 1/81. Ans.

Hope this helps.

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Please help need to get to 80%
Shalnov [3]

Answer:

\frac{1}{6}

Step-by-step explanation:

First, start by converting 4 feet to inches. Note that 1 foot = 12 inches.

Set up a unit converter:

4\ ft(\frac{12\ in}{1\ ft})

The ft cancel out leaving us with:

4*12\ in=48\ in

Now, we can set up a scale factor...

\frac{drawing}{real\ length}=\frac{8}{48}=\frac{1}{6}

3 0
3 years ago
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Rashid [163]

Answer: 28

Step-by-step explanation:

Divide 700 by 25

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3 years ago
Brenda has two pieces of string, one 28 feet long and the other 42 feet long. For an art project, she wants to cut them up to pr
NeTakaya

Answer:

7 feet

Step-by-step explanation:

Length of one piece of string = 28 feet.

Length of the second string = 42 feet.

Since the number of required pieces was not given but many are required, the greatest length can be determined by;

If the maximum length is 7 feet, then:

the number of pieces from 28 feet long string = \frac{28}{7}

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Also,

the number of pieces from the 42 feet lone string = \frac{42}{7}

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Total number of 7 feet strings that she can make = 4 + 6

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Since many pieces are required, the greatest length she can make is 7 feet. If she increase the length to 14 feet, the number of pieces would be 5 which limit the required number.

3 0
3 years ago
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Answer:

2

Step-by-step explanation:

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tekilochka [14]

Answer:

98^91

Step-by-step explanation:

Since the base of all the numbers is 98,

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example

98^53 * 98^38 = 98^91

3 0
2 years ago
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