2 years ago

-8.1 =v/7 + 3.1 what is v

Mathematics

1 answer:

Paladinen [302]2 years ago

5 0

V = 78.4
Explaination: because that’s the answer.

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(√2)^3

Natalka [10]

Answer:

√8

Step-by-step explanation:

√2x√2x√2 is 2x2x2 which is 8 then the square root √8.

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2 years ago

Slope is –2, and (5, 3) is on the line.<br> To be put into slope intercept form

Anvisha [2.4K]

i wish that i could help you but I just dont understand it... I am sorry

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3 years ago

Read 2 more answers

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tensa zangetsu [6.8K]

4^2 + 2(4 + 6)

4^2 + 2(10)

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3 years ago

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mote1985 [20]

Answer:

$n=\frac{0.3(1-0.3)}{(\frac{0.01}{1.96})^2}=8067.36$

And rounded up we have that n=8068

Step-by-step explanation:

The margin of error for the proportion interval is given by this:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

We want for this case a 95% of confidence desired, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The margin of error for this case is $ME =\pm 0.01$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

The estimated proportion for this case is $\hat p=0.3$ . And replacing into equation (b) the values from part a we got:

$n=\frac{0.3(1-0.3)}{(\frac{0.01}{1.96})^2}=8067.36$

And rounded up we have that n=8068

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3 years ago

I need the simplified expression for this please

morpeh [17]

2/3x - 2/3x4
2/3x - 8/3

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2 years ago