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3 years ago

Which ratio forms a proportion with 5: 15? A: 10:20 B: 75:5 C: 3:1 D: 1:3

Mathematics

1 answer:

Lerok [7]3 years ago

4 0

Answer:

Step-by-step explanation:

5/5 : 15/5

gives

1:3

......

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2 years ago

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Please help logarithms!

nlexa [21]

Given:

$\log_34\approx 1.262$

$\log_37\approx 1.771$

To find:

The value of $\log_3\left(\dfrac{4}{49}\right)$ .

Solution:

We have,

$\log_34\approx 1.262$

$\log_37\approx 1.771$

Using properties of log, we get

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$\log_3\left(\dfrac{4}{49}\right)=\log_34-\log_37^2$

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$\log_3\left(\dfrac{4}{49}\right)=1.262-2(1.771)$

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