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____ [38]
2 years ago
6

Help asap plzzz I NEED HELP !!!!!!!!

Mathematics
1 answer:
Vedmedyk [2.9K]2 years ago
4 0

Answer:

1520.5 in^2

Step-by-step explanation:

Surface area=2*pi*r^2+2*pi*r*h=2*pi*r*(r+h)=2*pi*11*22=1520.5 in^2

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Which of the following is not necessary to book a flight
KiRa [710]

Answer:

c

Step-by-step explanation:

drivers license is is not necessary.

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3 years ago
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Which method do you prefer to use to find sums- count by tens and ones, use compatible numbers, or use friendly numbers and adju
Usimov [2.4K]

I prefer to use compatible numbers because by using this method it is easier to make a sum mentally. This is true because compatible numbers are close in value to the actual numbers. For a better understanding, let's take an example:


Suppose you have two numbers, namely 640 and 40. These two numbers are compatible for division because:


64 ÷ 4 = 16


So, we have used mental arithmetic to solve a more complex problem.

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3 years ago
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The owner of a factory wants to determine a confidence interval for the average wages at his factory. The population average wag
iVinArrow [24]

4,034.06 ,5,965.94 are confidence interval for the population average wages at the factory.

What is confidence interval estimation?

Your estimate's mean plus and minus the range of that estimate's fluctuation is called a confidence interval.

                                              If you repeat your test, you can expect your estimate to fall between these numbers with a reasonable degree of certainty.  Another term for probability in statistics is confidence.

The formula for confidence interval estimation is:

μ = M ± Z(sM)

where:

M = sample mean

Z = Z statistic determined by confidence level

sM = standard error = √(s2/n)

M = 50000

Z = 2.58

sM = √(30002/64) = 375

μ = M ± Z(sM)

μ = 50000 ± 2.58*375

μ = 50000 ± 965.94

μ = 4,034.06 ,5,965.94

Learn more about confidence interval

brainly.com/question/24131141

#SPJ1

6 0
1 year ago
The volume of a sphere is 267.95 Feet cubicto the nearest foot what is the radius of the sphere feet cubic
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

V=\frac{4\pi r^3}{3}\\ \\ r^3=\frac{3V}{4\pi}\\ \\ r=\sqrt[3]{\frac{3V}{4\pi}}\\ \\ r\approx 4ft

3 0
2 years ago
Lines
kirill [66]

Answer:

line r: y=-2x-2

line s: -2x+1

lime t: -2x+3

Step-by-step explanation:

every slope must be -2 since that's stated in the question

to find b in y=mx+b, you substitute 0 for x and the y coordinate when x is 0 into the equation (for example for slope r, when x is 0 then y is -2, so -2=-2(0)+b) then solve for b (-2=-2(0)+b is -2=b)

basically, b is the y component when x is 0

8 0
3 years ago
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