3 years ago

Work out the answers to: a) 8.2 x 13 b) 0.8 x 5.7 What’s the answer?

Mathematics

1 answer:

Assoli18 [71]3 years ago

4 0

A.) 106.6
B.) 4.56
..........,.,...,,,

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Colt1911 [192]

Answer:

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Step-by-step explanation:

Given

$\log_bA=3\\ \\\log_bC=2\\ \\\log_bD=5$

Use properties:

$\log_b(A\cdot C)=\log_bA+\log_bC\\ \\\log_b\dfrac{A}{C}=\log_bA-\log_bC\\ \\\log_bA^k=k\log_bA$

Thus,

$\log_b\dfrac{A^5\cdot C^2}{D^6}\\ \\=\log_b(A^5\cdot C^2)-\log_bD^6\\ \\=\log_bA^5+\log_bC^2-\log_bD^6\\ \\=5\log_bA+2\log_bC-6\log_bD\\ \\=5\cdot 3+2\cdot 2-6\cdot 5\\ \\=15+4-30\\ \\=-11$

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irga5000 [103]

25-14=11
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