3 years ago

2x+3x Equals? Please help!!

Mathematics

1 answer:

satela [25.4K]3 years ago

8 0

Answer:

the answer is 5x

Step-by-step explanation:

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4 years ago

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Nadya [2.5K]

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Step-by-step explanation:

The formula to calculate the standard error of the population mean is given by :-

$S.E.=\dfrac{\sigma}{\sqrt{n}}$ , where $\sigma$ is the standard deviation and 'n' is the sample size.

Given: Mean : $\mu=$\50,000$

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Hence, the standard error of the average annual salary = 478

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3 years ago

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pav-90 [236]

Answer:

See Explanation

Step-by-step explanation:

$cos (90-A).sinA + sin(90 - A).cosA = 1 \\ \\ LHS = cos (90-A).sinA + sin(90 - A).cosA \\ \\ = sinA.sinA + cosA.cosA\\ \\ = sin ^{2} A + cos^{2} A \\ \\ = 1 \\ \\=RHS\\\\ reason \\ cos (90- \theta) = sin \theta \\ sin (90- \theta) = cos \theta \\ sin ^{2} \theta + cos^{2} \theta = 1 \\ \\ thus \: proved \\$

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Radda [10]

Answer:

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Please look at the drawing

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