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3 years ago

8

Find the area of the figure given.

2 answers:

Masja [62]3 years ago

8 0

Answer:

(6 × 7.2) + ((1/2 × 4.4) × 4) + (2.8 × 4)

43.2 + 8.8 + 11.2

<u>63.2</u>

Step-by-step explanation:

You want to split the figure into shapes you know such as squares, rectangles, and triangles. The formula for squares and rectangles are length times width. The formula for triangles are 1/2 base times height. I hope this helps and please mark me brainliest!

kupik [55]3 years ago

4 0

The answer is C - 63.2 cm

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Find the sum of -1.5 +3.5 + 2

GarryVolchara [31]

Answer:

4, see below :)

Step-by-step explanation:

We can rewrite the equation into:

3.5 + 2 - 1.5

First we add 3.5 and 2

3 and 2 are in the ones place so:

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5.5

Then:

5.5 - 1.5

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3 years ago

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3 years ago

A poll asked 1057 American adults if they believe there was a conspiracy in the assassination of President Kennedy, and found th

AVprozaik [17]

Answer:

The 95% confidence interval of the proportion of Americans who believe in the conspiracy is $0.551< p < 0.610$

Step-by-step explanation:

From the question we are told that

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Generally the sample proportion is mathematically represented as

$\^ p = \frac{614}{1057 }$

=> $\^ p = 0.5809$

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \sqrt{\frac{\^ p (1- \^ p)}{n} }$

=> $E = 1.96 * \sqrt{\frac{0.5809 (1- 0.5809)}{1057} }$

=> $E = 0.02975$

Generally 95% confidence interval is mathematically represented as

$\^ p -E < p < \^ p +E$

=> $0.5809 - 0.02975< p < 0.5809 + 0.02975$

=> $0.551< p < 0.610$

4 0

3 years ago