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emmainna [20.7K]

2 years ago

13

How do I do this question? Find the area of the patio below

2 answers:

Alina [70]2 years ago

4 0

The area of trapezoids is a=1/2h(b1+b2)
So: a=1/2 19 45(25+22 1/2)

MAXImum [283]2 years ago

4 0

The answer is 940 1/2 by first you will have to add the length soo...
22 1/2 +25 is 47 1/2
But then you will have to 47 1/2 and 19 4/5 into a mixed number..
47 1/2 = 95/2
19 4/5 = 99/5
Then you multiply 95/2 and 99/5 and get 9405/10.After that then you will divide 9405 by 10 and you should get 940.5 which is also equal to 940 1/2 ft

Hopes this helps! <span>( ͡° ͜ʖ ͡°)</span>

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The mayor of a town has proposed a plan for the construction of a new community. A political study took a sample of 800 voters i

Hunter-Best [27]

Answer:

A political strategist wants to test the claim that the percentage of residents who favor construction is more than 30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: $p \leq 0.3$

Alternative hypothesis $p >0.3$

Step-by-step explanation:

We have the following info given from the problem:

$n= 800$ the random sample of voters selected from the town

$\hat p = 0.34$ represent the proportion of residents favored construction

$p_o = 0.30$ represent the value desired to test.

A political strategist wants to test the claim that the percentage of residents who favor construction is more than 30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: $p \leq 0.3$

Alternative hypothesis $p >0.3$

And in order to test this hypothesis we can use a one sample z test for a population proportion and the statistic would be given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

And with the data given we have:

$z=\frac{0.34 -0.3}{\sqrt{\frac{0.3(1-0.3)}{800}}}=2.469$

7 0

2 years ago

Robin can run 1.71 kilometers in 10 minutes. How far can she run in 1.5 hours?

Flura [38]

Answer:

I think is 15.39 kilometers

Step-by-step explanation:

1 hour=60 minutes +.5 hours =90 minutes = 9 x 1.71 = 15.39

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2 years ago

Please help me with this!!

bearhunter [10]

Answer:

8.06

Step-by-step explanation:

Use the Pythagorean theorem:

$a^{2} +b^{2} =c^{2}$

The hypotenuse is always the slanted side, or c (x in this picture), but the other numbers can be interchanged. Doesn't matter.

Plug the numbers 4 and 7 into the formula.

$4^{2} +7^{2} =c^{2} \\$

Now evaluate them to get $c^2$

16+49=65

To get c, take the square root of 65

$\sqrt{65} = 8.06$

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2 years ago

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Mkey [24]

X = arctan(32/19)

x = 59.30 degrees.

You don't say if the answer needs to be rounded, so round it as needed.

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2 years ago