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2 years ago

What is the simplified expression for (9^3)^5 9^5 9^8 9^2 9^15

Mathematics

2 answers:

Lubov Fominskaja [6]2 years ago

8 0

The answer is the last one or D!

Nonamiya [84]2 years ago

7 0

Indices in brackets are multiplied like general numbers, so it's 9^15

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3(0.7z+2.8)=7(1.5z+7.2)

AnnZ [28]

Answer:

z = -5

Step-by-step explanation:

3(0.7z + 2.8) = 7(1.5z + 7.2)

2.1z + 8.4 = 10.5z + 50.4

2.1z - 10.5z = 50.4 - 8.4

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z = 42/(-8.4)

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