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natka813 [3]
2 years ago
13

What is the surface area of the figure below

Mathematics
1 answer:
Anna [14]2 years ago
4 0

Answer: Its 120 cm

Step-by-step-explenation:

All you have to do is multiply

3x2=6

6x5=30

30x4=120

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8.23 A manufacturing company produces electric insulators. You define the variable of interest as the strength of the insulators
Kitty [74]

Answer:

The 95% confidence interval estimate for the population mean force is (1691, 1755).

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally.

The sample selected here is <em>n</em> = 30.

Thus, the sampling distribution of the sample mean will be normal.

Compute the sample mean and standard deviation as follows:

\bar x=\frac{1}{n}\sum x=\frac{1}{30}\times 51702=1723.4\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{30-1}\times 232561.2}=89.55

Construct a 95% confidence interval estimate for the population mean force as follows:

CI=\bar x\pm z_{\alpha /2}\times\frac{s}{\sqrt{n}}

    =1723.4\pm 1.96\times\frac{89.55}{\sqrt{30}}\\\\=1723.4\pm 32.045\\\\=(1691.355, 1755.445)\\\\\approx (1691, 1755)

Thus, the 95% confidence interval estimate for the population mean force is (1691, 1755).

3 0
3 years ago
What property does the number sentence show? 8+0=8
zubka84 [21]
Identity Property of Zero!
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3 years ago
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Triangle XYZ with vertices X (1,-2) Y (3,-5) and Z (4,1) translated 5 units left and 3 units up
ValentinkaMS [17]

Answer:

x= (4,-7)

y= (6,-10)

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Step-by-step explanation:

3 0
2 years ago
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Answer:

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and the equation is

y=3x+4

Step-by-step explanation:

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You have been able to do the dishes in 30 minutes and vacuum in 15 minutes. youer roomate takes 40 minutes to do the dishes and
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Yours d+v=45minutes and roommate d+v=100minutes 






5 0
3 years ago
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