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ki77a [65]
2 years ago
7

Simplify 1/9^-3? A. 1/-27 B. 9^3 = 729 C.1/-729 D. 9^-3 = -27

Mathematics
2 answers:
Natali [406]2 years ago
8 0
Exponent rule : a^-b = 1 / (a^b)

1/9 ^-3 =
1 / (1/9^3) =
1 / (1^3) /(9^3) =
1 / (1/729) =
1 * 729/1 =
729

ur answer is B
uysha [10]2 years ago
4 0
The answer is b) 9^3 = 729
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Please help me thanks :)
Lina20 [59]

Answer:

A

Step-by-step explanation:

To sovle this we must combine the numbers togther and the variables togther.

We have:

8c+6-3c-2

Lets take out the c's and combine them:

8c -3c

=

5c

Now lets take out the numbers:

6-2

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Now lets put these back together and we get the expression:

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This looks like A.

Hope this helps! :D

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2 years ago
What is the measurement of BC to the nearest centimeter?
77julia77 [94]

Answer:

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Step-by-step explanation:

You are given two sides and the included angle. Since you don't have any side and the opposite angle, you must use the law of cosines.

a^2 = b^2 + c^2 - 2bc\cos A

a^2 = 5^2 + 11^2 - 2(5)(11)\cos 39^\circ

a^2 = 25 + 121 - 110\cos 39^\circ

a^2 = 60.51

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7 0
3 years ago
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rjkz [21]

Answer:

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aliya0001 [1]

Answer:

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Step-by-step explanation:

Giving the following information:

Money spent= $59

Proportion of savings= 25% = 0.25

<u>To calculate the total savings before shopping, we need to use the following formula:</u>

Savings= money spent / proportion of savings

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7 0
3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
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