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3 years ago

Ill give u brainliest pls help asap!

Mathematics

1 answer:

Jobisdone [24]3 years ago

7 0

<h3>✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽</h3>

➷ 4 - 0 = 4

The answer is A. $4

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A researcher is interested in knowing the average height of the men in a village. To the researcher, the population of interest

Anna11 [10]

Answer:

The population mean height of men in the village is 5.78 feet.

The sample mean height of men in the village is 7.8 feet.

Step-by-step explanation:

It is provided that the researcher's interest is in knowing the average height of the men in a village.

To the researcher, the population of interest is the men in the village, the relevant population data are the height of men in the village, and the population parameter of interest is the mean height of men.

It is also provided that there are 590 men in the village, and the sum of their heights is 3,410.2 feet.

Compute the average height as follows:

$\bar X_{H}=\frac{3410.2}{590}=5.78\ \text{feet}$

Thus, the population mean height of men in the village is 5.78 feet.

It is given that the researcher measured the heights of 18 village men and calculated the average to estimate the average height of all the village men.

The sample for his estimation is 18 men, the relevant sample data are the heights of the 18 men, and the sample statistic is the sample mean height.

It is also given that the sum of the heights of the 18 village men is 104.4 feet.

Compute the average height of the 18 men as follows:

$\bar x_{H}=\frac{104.4}{18}=7.8\ \text{feet}$

Thus, the sample mean height of men in the village is 7.8 feet.

8 0

3 years ago

Factor completely. 16-49x^2=16−49x 2 = (Can someone help me plz)

MrRa [10]

X=0,1
Pls mark brainliest

7 0

4 years ago

April has 394 paper clips that she has to divide equally between 9 of her coworkers, how many paper clips will each coworker get

NeTakaya

Answer:

Every each co-worker will get 43, and 7 will be left over.

divide 394 by 9, you will get 43r7

43 x 9 = 387

394 - 387 = 7

3 0

3 years ago

Find the angle between V and W, Round your answer to one decimal place, if necessary V=-5i+2j W=-8i+2j A 17.8° B 353.9° C 3.9° D

LiRa [457]

Answer:

D. 7.8°

Step-by-step explanation:

There are many ways to work this problem. One is to subtract the angle of V from that of W:

∠V = arctan(2/-5) ≈ 158.20°

∠W = arctan(2/-8) ≈ 165.96°

Then ∠W -∠V = 165.96° -158.20° = 7.76° ≈ 7.8°

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Another is to divide W by V, since the quotient will have an angle that is the difference of their two angles.

(-8i +2j)/(-5i +2j) = (1/29)(44i +6j)

Then the angle of that is ...

arctan(6/44) ≈ 7.8°

___

You can also divide the dot product by the product of the two magnitudes to find the cosine of the angle between the vectors.

(V•W)/(|V|·|W|) = 44/√(68·29) = cos(x)

x = arccos(0.990830168...) ≈ 7.8°

___

A plot on graph paper will let you measure the angle with a protractor. You can obtain sufficient accuracy to choose between the offered answers.

___

Your graphing calculator may have complex number functions that let you work directly with the angles of the vectors. (See second attachment. The calculator is in degrees mode.) Doing 2-dimensional vector calculations on a calculator may best be accomplished by treating them as complex numbers.

5 0

4 years ago

You're a customer with an everyday checking account. indicate which statement below is TRUE.

Vsevolod [243]

Answer:

The first choice

Step-by-step explanation:

I know this because I have one, but also, it says in the options to avoid monthly fee section.

4 0

3 years ago