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3 years ago

Step by step how to solve 4x+2=5(x+10)

Mathematics

1 answer:

Shalnov [3]3 years ago

8 0

Answer:

x = -48

Step-by-step explanation:

4x + 2 = 5(x + 10)

expand the 5(x+10)

4x + 2 = 5x + 50

-2 both sides

4x + 2 - 2 = 5x + 50 - 2

simplify

4x = 5x + 48

-5x both sides

4x - 5x = 5x + 48 - 5x

simplify

-x = 48

÷ (-1) both sides

-x ÷ (-1) = 48 ÷ (-1)

simplify

x = -48

The answer is x = -48.

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at a store, the probability that a customer buys socks is 0.15. the probability that a customer buys socks given that the custom

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First we assign a name to the events:

Event S: a customer buys socks

Event H: a customer buys shoes.

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We also know that the probability of S given that H occurs is:

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3 years ago

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

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Answer:

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

Step-by-step explanation:

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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:

$n_B = 30$ .

Then the standard deviation for the difference of means has the following form:

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

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4 years ago

Step by step how to solve 4x+2=5(x+10)​

Step by step how to solve 4x+2=5(x+10)