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3 years ago

When 3(2x + 9) = 4x - 7 is solved for X, the solution is 1 3. is 17 4 xs-17

Mathematics

2 answers:

lyudmila [28]3 years ago

8 0

$\\ \sf\longmapsto 3(2x+9)=4x-7$

$\\ \sf\longmapsto 6x+27=4x-7$

$\\ \sf\longmapsto 6x-4x=-7-27$

$\\ \sf\longmapsto 2x=-34$

$\\ \sf\longmapsto x=17$

sleet_krkn [62]3 years ago

6 0

Answer:

The answer will be - 27 we multiply 3by 2x and 9 remove the numbets of x togather and numbers togather then solve

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kirill115 [55]

Answer:

$0.60 - 1.96\sqrt{\frac{0.60(1-0.60)}{1019}}=0.570$

$0.60 + 1.96\sqrt{\frac{0.60(1-0.60)}{1019}}=0.630$

The 95% confidence interval for the true proportion would be given by (0.570;0.630) .

And if we convert this into % we got (57.0%, 63.0%)

Step-by-step explanation:

The information given we have the following info given:

$n = 1019$ represent the sampel size

$\hat p=0.6$ represent the sample proportion of interest

The confidence level is 95%, 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 confidence interval for the mean is given by the following formula:

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

Replacing the info given we got:

$0.60 - 1.96\sqrt{\frac{0.60(1-0.60)}{1019}}=0.570$

$0.60 + 1.96\sqrt{\frac{0.60(1-0.60)}{1019}}=0.630$

The 95% confidence interval for the true proportion would be given by (0.570;0.630) .

And if we convert this into % we got (57.0%, 63.0%)

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3 years ago

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amm1812

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Step-by-step explanation:

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follow me

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3 years ago

In the diagram below, m A = 59°, m B = 55° and m C = 78°. Find m D.

masya89 [10]

Answer:

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Step-by-step explanation:

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Then the missing measurement is a vertical which means that E=66.

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