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scZoUnD [109]
3 years ago
8

Please be 100 correct! I'll give brainiest to who's correct.

Mathematics
2 answers:
deff fn [24]3 years ago
5 0
You find the area of a rectangle by multiplying the length times the height, so for the first one it would be 4.5×6.75, and that’s 30.375.

The answer for the first one is 30.375 inches squared.

Then we do the same for the second one, 14×9. That gives us 126.

The answer for the second one is 126 feet squared. 
andreev551 [17]3 years ago
3 0
A = L*W
A = 6.75 * 4.5
A = 30.375

answer
D. 30.375 in^2

------------------
A = L*W
A = 9 * 14
A = 126

answer
C. 126 ft^2
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A Rasmussen Reports survey of 1,000 US adults found that 42% believe raising the minimum wage will help the economy. Construct a
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Answer:

(0.3798, 0.4602)

Step-by-step explanation:

Let p be the true proportion of US adults who believe raising the minimum wage will help the economy. A point estimate for p is \hat{p}=0.42 and a good aproximation (because we have a large sample) for the standard deviation of \hat{p} is \sqrt{\hat{p}(1-\hat{p})/n}=\sqrt{0.42(0.58)/1000}=0.0156. Therefore, a 99% confidence interval for p is given by \hat{p}\pm z_{\alpha/2}\sqrt{\frac{\hat{p}(1-\hat{p})}{n}} where \alpha=0.01 and z_{\alpha/2} is the \alpha/2th quantile of the standard normal distribution, so we have, 0.42\pm z_{0.005}0.0156, i.e., 0.42\pm(-2.5758)(0.0156) or equivalently (0.3798, 0.4602).

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3 years ago
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2 years ago
Reggie needs 24 feet of rope to make a tire swing. He has 10 yards of rope. Is this enough for him to make his swing? Explain.
Luden [163]

Answer:

8 yards < 10 yards

He has enough.

Step-by-step explanation:

1 yard = 3 feet

y yards = 24 feet

\frac{1}{3} :\frac{y}{24}

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3y = 24

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3 years ago
The frequency of vibrations of a vibrating violin string isgiven by
arlik [135]

Answer:a. [tex] $f\propto  L$ [\tex]

b. [tex] f \propto \sqrt{T} [\tex]

c. [tex] f \propto \frac{1}{\sqrt{P}} [\tex]

I. Decrease in length increases leads to increase in pitch.

II. Increase in tension leads to increase in pitch.

III. Increase in linear density reduces the pitch

Step-by-step explanation: I. Since the frequency is inversely proportional to the length increase in length leads to decrease in frequency likewise decrease in length leads to increase in frequency.

II. Since the frequency is directly proportional to the square root of the tension increase in tension leads to increase in frequency likewise decrease in tension leads to decrease in frequency.

III.since the frequency is inversely proportional to the square root of the linear density so increase in linear density leads to decrease in frequency and likewise decrease in linear density leads to increase in frequency.

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What is 10√273s · 3√14st³u³
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