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sladkih [1.3K]
2 years ago
7

HELP ASP PLS I WILL GOVE BRAINIST PLS PLS PLS HELPPPP picture below

Mathematics
1 answer:
belka [17]2 years ago
4 0

We can solve this problem in three steps.

<u>1) find the area of the square</u>

a=lw\\\\a=(7.5)(6)\\\\a=45ft^{2}

<u>2) find the area of the triangle</u>

a=\frac{1}{2}bh\\\\a=\frac{1}{2} (6)(4)\\\\a=12ft^{2}

<u>3) add the areas together</u>

a=45+12

<em>a = 57 ft²</em>

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4 years ago
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kodGreya [7K]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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In a sample of 115 115 curtains, the average length was found to be 32.2in. 32.2 ⁢ in. With a standard deviation of 0.8 0.8 . Gi
pentagon [3]

Answer:

The point estimate for the population standard deviation of the length of the curtains is 8.58in.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this problem, we have that:

s = 0.8, n = 115

The point estimate for the population standard deviation of the length of the curtains is \sigma. So

s = \frac{\sigma}{\sqrt{n}}

\sigma = s\sqrt{n}

\sigma = 0.8\sqrt{115}

\sigma = 8.58

The point estimate for the population standard deviation of the length of the curtains is 8.58in.

3 0
3 years ago
How do you convert 3 9/10 into a decimal
stepladder [879]

divide 9 by 10. (the numerator and denominator) = 9 / 10 = 0.9

add the 0.9 to the 3 so, 3 + 0.9 = 3.9


answer: 3.9


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3 years ago
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Just simple adding and subtracting. I hope this helps hun!
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4 years ago
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