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2 years ago

9

When can you use the square roots of perfect squares to determine the perfect roots of decimals ?

1 answer:

Alika [10]2 years ago

8 0

If you want to find the decimal value of a square root, you can use the 2 closest perfect squares to them.

Example

Approximate the value of sqrt20

Pick the 2 closest perfect squares, one before and one after 20:

16 and 25.

So, the square root of 20 has to be between 4 and 5.

Since 20 is closer to 16 than it is to 25,

We can estimate the decimal value of sqrt20 to be around 4.4

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zvonat [6]

Answer:

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3 years ago

-y varies inversely with x. When y = 9.6, x = 12. What is the value of k, the constant of inverse variation?

alisha [4.7K]

Question 1:

For this case we have an equation of the form:

$y = \frac {k} {x}$

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Then, substituting values we have:

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From here, we clear the value of k.

We have then:

$k = 9.6 * 12\\k = 115.2$

Answer:

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Question 2:

For this case we have:

$y = \frac {k} {x}$

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<em>k: constant of variation. </em>

Then, substituting the value of the constant we have:

$y =\frac {5.6} {x}$

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Answer:

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3 years ago

A block of wood has a mass of 6.0 g and a volume of 12.0 cm^3 . What is the density of the block of wood?

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2 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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sladkih [1.3K]

Answer:

x = 36 is not a solution

Step-by-step explanation:

3x<100

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This is not true so x = 36 is not a solution

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2 years ago

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