3 years ago

Estimate the square root to the nearest (a) integer and (b) tenth.

Mathematics

1 answer:

devlian [24]3 years ago

8 0

Answer:

√(27/4) = 2.6

=> a.neartest integer: 2

b.nearest tenth: 6

Step-by-step explanation:

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The standard deviation of a sample taken from population A is 17.6 for a sample of 25.

lawyer [7]

Answer:

The standard deviation of the sample mean differences is _5.23_

Step-by-step explanation:

We have a sample of a population A and a sample of a population B.

For the sample of population A, the standard deviation $\sigma_A$ is

$\sigma_A = 17.6$

The sample size $n_A$ is:

$n_A = 25$ .

For the sample of population B, the standard deviation $\sigma_B$ is

$\sigma_B = 21.2$

The sample size $n_B$ is:

$n_B = 30$ .

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$\sigma=\sqrt{\frac{\sigma_A^2}{n_A}+\frac{\sigma_B^2}{n_B}}$

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4 years ago

\root(3)(-3)\root(3)(-5)=\root(3)(15) true or false

Oksi-84 [34.3K]

The equation $\sqrt[3]{-3} \cdot \sqrt[3]{-5} = \sqrt[3]{15}$ is true

<h3>How to determine the true statement?</h3>

The equation is given as

$\sqrt[3]{-3} \cdot \sqrt[3]{-5} = \sqrt[3]{15}$

Apply the law of indices

$\sqrt[3]{-3 * -5} = \sqrt[3]{15}$

Evaluate the product

$\sqrt[3]{15} = \sqrt[3]{15}$

Both sides of the equation are the same

Hence, the equation $\sqrt[3]{-3} \cdot \sqrt[3]{-5} = \sqrt[3]{15}$ is true