2 years ago

How do I solve this: -3x+2y=2 5x-2y=-10

Mathematics

1 answer:

Dvinal [7]2 years ago

4 0

Answer:

Step-by-step explanation:

Solution is given below in attachment

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Step-by-step explanation:

The answer is

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2 years ago

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A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig

Anika [276]

Answer: (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

$\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size = 463

$\mu=118\text{ minutes}$

$\sigma=65\text{ minutes}$

Significance level : $\alpha=1-0.99=0.01$

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Now, the 90% confidence interval for the population mean will be :-

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3 years ago

Uation for x and enter your answer in the box below<br> --3x + 7 = -2

Varvara68 [4.7K]

Answer:

x = -3

Step-by-step explanation:

Step 1: Simplify signs

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Step 3: Divide both sides by 3

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2 years ago

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