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3 years ago

) Explain two ways you could solve 20 = 5(-3 + x)

Mathematics

1 answer:

inn [45]3 years ago

7 0

Answer:

You can distribute the 5 into the parentheses, or u can divide on both sides to get rid of the 5. Either way, you're going to get the same answer.

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7/12+1/3=11/12
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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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4 years ago

Read 2 more answers

An article described a study of reading speed for undergraduate and graduate students. In a sample of 12 undergraduates, the mea

Elis [28]

Answer: $(0.85,\ 3.15)$

Step-by-step explanation:

Given : $n_x=12\ ;\ \mu_x=4.8\ ;\ \sigma_x=1.9$

$n_y=24\ ;\ \mu_y=2.8\ ;\ \sigma_y=1.0$

Significance level : $\alpha: 1-0.95=0.05$

Critical value : $z_{\alpha/2}=1.96$

Now, the confidence interval for difference of two population mean :-

$\mu_x-\mu_y\pm z_{\alpha/2}(\sqrt{\dfrac{\sigma_x^2}{n_x}+\dfrac{\sigma_y^2}{n_y}}\\\\=4.8-2.8\pm(1.96)(\sqrt{\dfrac{(1.9)^2}{12}+\dfrac{(1.0)^2}{24}}\\\\\approx2\pm1.15\\\\=(0.85,\ 3.15)$

Hence, the 95% confidence interval for the difference $\mu_x-\mu_y=(0.85,\ 3.15)$

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3 years ago

) Explain two ways you could solve 20 = 5(-3 + x)​

) Explain two ways you could solve 20 = 5(-3 + x)