<img src="https://tex.z-dn.net/?f=%28w%20%2B%20%20%5Cfrac%7B4%7D%7Bw%7D%20%29%20%20%7B%7D%5E%7B2%7D%20" id="TexFormula1" title="

All categories

Hitman42 [59]

2 years ago

(w + \frac{4}{w} ) {}^{2} " alt="(w + \frac{4}{w} ) {}^{2} " align="absmiddle" class="latex-formula">

Mathematics

1 answer:

kifflom [539]2 years ago

6 0

Answer:

W^2 + 8w/w + 16/x^2

Explanation:

You might be interested in

Explain the error. A student was given a graph and asked to use the vertical line test

11111nata11111 [884]

Answer:

The answer is C.

There is a horizontal line test but the question asks to use the vertical line test. Using the horizontal line test you would get that the function is not one to one but using the vertical line test you would get its one to one.

4 0

3 years ago

In a certain month a family spent $750 on food .In third month the family spent $729 on food .What was percentage decrease in th

seraphim [82]

Answer: 2.8%

Step-by-step explanation:

Give, In a certain month a family spent $750 on food

In third month the family spent $729 on food .

i.e. Expenditure on food in a certain month = $750

Expenditure on food in third month = $729

Decrease in monthly spending on food = (Expenditure in a certain month )- (Expenditure in third month )

= $750 - $729

= $21

Now , the percentage decrease in the month spent on food will be :

$\dfrac{\text{Decrease in monthly spending on food }}{\text{Expenditure on food in a certain month}}\times100\\\\=\dfrac{21}{750}\times100\\\\=2.8\%$

Hence, the percentage decrease in the month spent on food is 2.8%.

3 0

3 years ago

A restaurant would like to evaluate the efficiency of its workers, so they observe the workers during the second shift.

Ksivusya [100]

Answer:

1.) It is biased

2.) No

3.) Yes

4.) No

Step-by-step explanation:

1.) It is biased as it is predisposition to one particular outcome over another.

2.) No, because biased in research leads to unrepresentative outcomes as the estimates is predisposed to the left or to the right of the true values.

3.) Yes. Since the selection of shift has an equal probability of being chosen.

4.) No. The probability that the sample accurately reflects the efficiency of the workers, the standard should be 95%.

4 0

3 years ago

The diameters of ball bearings are distributed normally. The mean diameter is 123 millimeters and the standard deviation is 4 mi

Mrac [35]

Answer:

0.0668

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 123, \sigma = 4$

Find the probability that the diameter of a selected bearing is greater than 129 millimeters.

This is 1 subtracted by the pvalue of Z when X = 129. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{129 - 123}{4}$

$Z = 1.5$

$Z = 1.5$ has a pvalue of 0.9332

1 - 0.9332 = 0.0668

0.0668 = 6.68% probability that the diameter of a selected bearing is greater than 129 millimeters.

8 0

3 years ago

On the scale drawing of a car, the length from bumper to bumper is 6 inches. The car’s actual length, from bumper to bumper, is

jolli1 [7]

Answer:

24 Inch

Step-by-step explanation:

As the scale drawing and the actual car are similar .

so,

height of bumper in drawing

height of bumper in actual car=height of the window in drawing/height of the window in actual car

6 in./16*12 in.=¾ in./height of the window in actual car

height of the window in actual car=¾*16*12/6 in.

6 0

2 years ago

Read 2 more answers