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Rina8888 [55]
3 years ago
6

Determine the mean of the following numbers: 28, 40, 53, 39, 45

Mathematics
2 answers:
MAXImum [283]3 years ago
5 0

Answer: The mean of those numbers is 41

Step-by-step explanation:The way to find the mean is to add up all the numbers which is 205 and you divide it by how many whole numbers there are which is 5 and that's how you get the mean

just olya [345]3 years ago
4 0

Answer:

41

Step-by-step explanation:

The Mean of a set of numbers is just the average meaning you add them all up and divide them by how many numbers you added.

28+40+53+39+45=205

The number of numbers you added is 5 so

205/5=41

And there is your answer 41

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Please answer this correctly I have to finish this today as this is my deadline
Musya8 [376]

Answer:

r = 1.499619733762 m  There is no such thing a quarter radius!

C = 9.4223886775301 m

A = 7.065 m^2

Step-by-step explanation:

Calculate r and C | Given A

Given the area of a circle calculate the radius and circumference

r = √(A / π)

C = 2πr

Agenda:

r = radius

C = circumference

A = area

π = pi = 3.1415926535898

√ = square root

8 0
3 years ago
Victoria purchased 0.6lbs of deli ham for $4.71. What is the cost of ham per pound?
BartSMP [9]

Answer:

$7.85

Step-by-step explanation:

Per pound = 1

Ratios:

\frac{4.71}{0.6} =\frac{x}{1} \\\\0.6x=4.71\\x=7.85

7 0
3 years ago
Help me! this is hard! i don't understand
LekaFEV [45]
I believe AC=3 inches
8 0
3 years ago
Math question #1 please show steps
-Dominant- [34]

Answer:

C

Step-by-step explanation:

An approximation of an integral is given by:

\displaystyle \int_a^bf(x)\, dx\approx \sum_{k=1}^nf(x_k)\Delta x\text{ where } \Delta x=\frac{b-a}{n}

First, find Δx. Our a = 2 and b = 8:

\displaystyle \Delta x=\frac{8-2}{n}=\frac{6}{n}

The left endpoint is modeled with:

x_k=a+\Delta x(k-1)

And the right endpoint is modeled with:

x_k=a+\Delta xk

Since we are using a Left Riemann Sum, we will use the first equation.

Our function is:

f(x)=\cos(x^2)

Therefore:

f(x_k)=\cos((a+\Delta x(k-1))^2)

By substitution:

\displaystyle f(x_k)=\cos((2+\frac{6}{n}(k-1))^2)

Putting it all together:

\displaystyle \int_2^8\cos(x^2)\, dx\approx \sum_{k=1}^{n}\Big(\cos((2+\frac{6}{n}(k-1))^2)\Big)\frac{6}{n}

Thus, our answer is C.

*Note: Not sure why they placed the exponent outside the cosine. Perhaps it was a typo. But C will most likely be the correct answer regardless.

5 0
3 years ago
An academic advisor calculated the mean GPA for college freshmen to be 2.33, with a standard deviation of 1.06. The advisor know
AfilCa [17]

Answer:Average error will be less

Step-by-step explanation: Prediction error refers to the difference between the the actual and predicted value of an observation. Using correlation analysis or study, The level or degree of correlation or relationship between two measured variables usually determines the variation or measure of the prediction error. If there is no relationship or correlation between two measured variables, if such model is used to make prediction, the average prediction error will be very high. However, since it is stated that there exist a relationship between high school GPA and Freshman-year GPA, then making prediction based on this assertion will lessen the average prediction error.

4 0
3 years ago
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