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BabaBlast [244]
3 years ago
5

I need help 2(x + 1) = 2x + 2.

Mathematics
1 answer:
Ksju [112]3 years ago
7 0
2(x + 1) = 2x + 2\\
2x+2=2x+2\\
0=0\\
x\in\mathbb{R}
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Vera_Pavlovna [14]
Well if there were 50 questions it would be 2 points each so if he ended up with 96% he must have missed 2 questions
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3 years ago
Read 2 more answers
Which expression should you simplify to find the 90% confidence interval,
bogdanovich [222]

Answer:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.2870.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is \hat p=0.45

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025.

And the critical value is:z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the true population proportion is interest is given by this formula:  

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

Replacing the values provided we got:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287\\\\0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

5 0
3 years ago
Why is corruption discouraged in a country​
zysi [14]

Answer:Corrupted economies are not able to function properly because corruption prevents the natural laws of the economy from functioning freely. As a result, corruption in a nation's political and economic operations causes its entire society to suffer.

Step-by-step explanation:

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2 years ago
The two lines below intersect as shown what the value of x (2x+29) (9x-13)
tensa zangetsu [6.8K]

Given:

Two lines intersect each other.

Consider the below figure attached with this question.

To find:

The value of x.

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If two lines intersect each other then the vertically opposite angles are congruent and their measures are equal.

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2x+29=9x-13

2x-9x=-29-13

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Divide both sides by -7.

x=\dfrac{-42}{-7}

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Therefore, the value of x is 6.

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3 years ago
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because 8 are math so 9 of them are other 
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