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3 years ago

Who is correct Finn or Fiona

Mathematics

1 answer:

suter [353]3 years ago

8 0

Fiona is correct- if a shape dilated by a fraction it’s always smaller, unless in the fraction the bigger number is on top. So if it’s more than 1 the shape gets bigger. And if it’s less than one it always gets smaller. Hope this didn’t confuse you even more.

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Seth is using a large shoebox to store his baseball cards. The length of the box is 12 inches, and the height is 6 inches. If th

user100 [1]

Answer:

25,312.

Step-by-step explanation:

8 0

3 years ago

The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the variance of

White raven [17]

Answer:

0.3075 = 30.75% probability that a person will wait for more than 7 minutes.

Step-by-step explanation:

Problems of normally distributed samples are 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.

The standard deviation is the square root of the variance.

In this problem, we have that:

$\mu = 6, \sigma = \sqrt{4} = 2$

Find the probability that a person will wait for more than 7 minutes.

This is 1 subtracted by the pvalue of Z when X = 7. So

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

$Z = \frac{7 - 6}{2}$

$Z = 0.5$

$Z = 0.5$ has a pvalue of 0.6915

1 - 0.6915 = 0.3075

0.3075 = 30.75% probability that a person will wait for more than 7 minutes.

7 0

3 years ago

Find the slope of the line that passes through each pair of points

pantera1 [17]

Answer:

upper left: -7/3, lower: 3, upper right: -2/3

Step-by-step explanation:

upper left :

(1-8)/(7-4)=-7/3

lower:

(9-0)/(4-1)=9/3=3

upper right:

(-1-5)/(6-(-3))=-6/9=--2/3

5 0

3 years ago

Which of the following does NOT reveal the variation (spread) of the data? Check all that apply. Mean Mode Standard Deviation Ra

leonid [27]

Mean, mode and median does NOT reveal the variation (spread) of the data.

When analyzing data, the most sort for characteristics is the variation (spread) in the data.

The values of the data in a sample might be more closely near the mean in some data sets whereas in other data sets the values of the data might be spread out from the mean.

Common measure of variation or spread are the standard deviation, range, variance.

Find out more at: brainly.com/question/23754141

7 0

3 years ago

A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. The total volume of the solid is 6 cubi

lawyer [7]

Answer:

1. The answer of the radius of the cylinder is 1.127cm to produce the minimum surface area

2. The radius of the industrial tank is 1.465ft and the height is 662.396 ft

Step-by-step explanation:

<u>The first step</u> is to draw the shape and to determine the total surface area and the total volume of the shape. This is done by adding the total surface area of two hemispheres and the surface area of the cylinder and for the volume this is done by adding the volume of two hemispheres and the volume of the cylinder.

<u>The second step</u> is to make the total volume of the shape the constraint equation and the total surface area of the shape becomes the optimisation equation. From the constraint equation solve for h and make it in terms of r (you should advisable use V as a constant and finally substituting at the end). Thereafter, input the value of h in the optimisation equation and differentiate the equation with respect to r. Finally equate the equation to zero.

Third step involves solving for r

Now, for the second question, one has to double the total surface area of the hemispheres to provide the cost equation (this is done to take into account the higher costs of the hemispherical ends. Solve in the same way as the first and you will get the answer.

[KINDLY NOTE I TRIED TYPING THE SOLUTION BUT IT TOOK SO LONG THAT I GOT LOGGED OUT SO FIND ATTACHED PICTURES OF THE SOLUTION, if you follow the steps, it would serve as a guide]

4 0

3 years ago