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3 years ago

Volume of a cylinder that has a diameter of 16 and a height of 7

Mathematics

2 answers:

VladimirAG [237]3 years ago

8 0

Answer:

volume of a cylinder = 1408

hope this answer helps you...

kenny6666 [7]3 years ago

5 0

Answer:

1407.616

Step-by-step explanation:

Volume of cylinder=πr²h

V=3.142×8×8×7

V=1407.616

NOTE: radius =diameter/2=16/2

giving 8.

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A ladder 10 ft long rests against a vertical wall. Let theta be the angle between the top of the ladder and the wall and let be

IgorC [24]

Answer:

5 ft/s

Step-by-step explanation:

Let L be the length of the ladder. The relation between the angle and distance X is:

X = L * sin θ the change of X will be:

dX/dt = L * cos θ If we evaluate the expression when θ = π/3, we get the change of X:

dX/dt = 10 * cos(π/3)

dX/dt = 5 ft/s

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Licemer1 [7]

Answer:

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Step-by-step explanation:

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2 years ago

If the sum of a number and 4 are doubled the result is two less than the number what's the number

Sedbober [7]

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3 years ago

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krok68 [10]

I took it 9th grade last year, what’s up?

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3 years ago

Which function in Excel is used to perform a test of independence? a. T.TEST b. CHISQ.TEST c. NORM.S.DIST d. Z.TEST

denis23 [38]

Answer:

b. CHISQ.TEST

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

The statistic is given by:

$\chi^2 = \sum_{i=1}^n \frac{(O_i-E_i)^2}{E_i}$

In order to calculate the p value we need to have in count the degrees of freedom , on this case $df=(rows-1)(#cols-1)$ . And we can calculate the p value would be given by:

$p_v =P(\chi^2 >\chi^2_{calc})$

But the correct comand is given by:

b. CHISQ.TEST(Actual range, Expected range)

We just need to put in one column the Observed values and in other the expectec values.

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3 years ago