To a set of five grades with an average of 7.31, the following grades are added 4.47 and 9.15 What is the new average?

Answers

Answer 1

Answer:

New mean average of 7 grades = 7.17 (Approx.)

Step-by-step explanation:

Given:

Mean average of 5 grades = 7.31

Number of grades = 5

New grades = 4.47 and 9.15

Find:

New mean average of 7 grades

Computation:

Total of old grades = Mean average of 5 grades x Number of grades

Total of old grades = 7.31 x 5

Total of old grades = 36.55

Total of new grades = Total of old grades + 4.47 + 9.15

Total of new grades = 36.55 + 4.47 + 9.15

Total of new grades = 50.17

New mean average of 7 grades = 50.17 / 7

New mean average of 7 grades = 7.167

New mean average of 7 grades = 7.17 (Approx.)


Related Questions

Find the mode, median, mean, lower quartile (Q1), upper quartile (Q3), minimum, maximum, range, interquartile range, and standard deviation for the data set. Then create a box and whisker plot. Be sure to show work for finding the lower and upper fence and then plot any possible outliers appropriately. Round answers to the nearest hundredth.

1) The following data is the points that
Melody scored in her first 13 games of her
basketball season.
16, 12, 14, 9, 8, 12, 14, 28, 15, 18, 7, 14, 6

Answers

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User averysmartperson is helping with this question.

Answers

Answer:

[tex]x^2 + (y-60)^2 = 30,625[/tex]

Step-by-step explanation:

There are 42 carts, so there is 42 spaces in between them; if one of those spaces are 25pi/3 feet long, then 42 of them would be 25*42*pi/3 = 350pi (Perfect! no fractions)

350pi is the circumference. Now if we plug that into the circumference equation we get:

C = 2pi*r

350pi = 2pi*r

Divide both sides by pi to get rid of it

350 = 2r

Divide both sides by 2

r = 175 feet

So the new equation to graph it is:

x^2+y^2 = 175^2 = 30,625

We also know that the center of the Ferris wheel has to be at least 60 feet from the ground. Since the radius is more than that, a good bit of the Ferris wheel has to be underground OR we can make it higher (keyword: at least) if we want it to be above ground. I'll do the equation for underground since it more closely represents the question.

subtracting a number from y, shifts the graph up that much so:

[tex]x^2 + (y-60)^2 = 30,625[/tex]

I can't really draw it electronically but I can graph it:

please help meeeeeeeeeeeeeeeee

Answers

Answer:

hi

Step-by-step explanation:

i think so...

[tex]\pi \times {r}^{2} \times \frac{h}{3} \\ 3.14 \times 3.5 \times \frac{9}{3} \\ = 32.97[/tex]

hope it helps

bye

What’s the answer to this math problem

Answers

Answer:

The answer is C

Step-by-step explanation:

48/112 = 0.4285

convert and round it

0.4285 = %42.9

The percent of the 7th grade students were in favor of wearing school uniforms is 42.9%.

From the given table,

7th grade students who are in favor of wearing uniform = 48

Total 7th graders = 112

So, the percent of the 7th grade students were in favor of wearing school uniforms

= 48 / 112 x 100

= 12 / 23 x 100

= 42.85%

Learn more about Percentage here:

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A spinner is shown below. What is the probability of the spinner
not landing on a striped section?

Answers

Answer:

[tex] \frac{7}{8} [/tex]

I’m dead for not knowing this

Answers

The correct answer is A: -2 + 2 = 0

solve the quadratic equation
y^2 −10y+21=0
y=?

Answers

Answer: y = 3 or y=7

Step-by-step explanation:

[tex]y^{2} -10y+21[/tex]

what 2 factors of 21 can equal 10 when added together (1*21- no 3*7- yes)

Factor

[tex](y-3)(y-7)[/tex]

y-3=0

y=3

or y-7=0

y=7


Find the area of the shape shown in the diagram below (dimensions are in ft):

Answers

Answer:

where is the picture???????????

what is 3/7 divided by 2/5?

Answers

Answer:

1 1/14

you have to multiply by the reciprocal of the second fraction

Which shows the expressions in the order they would appear on a number line from least to greatest? a 2 to the power of 3, square root of 5, square root of 20, square root of 11, 11 over 9 b 2 to the power of 3, square root of 11, 11 over 9, square root of 20, square root of 11 c 11 over 9, square root of 5, square root of 11, square root of 20, 2 to the power of 3 d 11 over 9, 2 to the power of 3, square root of 5, square root of 20, square root of 11

Answers

Answer:

It's C, I just wrote it out.

A statistics teacher wants to see if there is any difference in the abilities of students enrolled in statistics today and those enrolled five years ago. A sample of final examination scores from students enrolled today and from students enrolled five years ago was taken. You are given the following results. T
oday 5 Years Ago Mean 82 88 Variance 112.5 54 Sample Size 45 36
The standard deviation of the difference between the means of the two populations is
A) 12.9
B) 9.3
C) 4
D) 2

Answers

Answer: D) 2

Step-by-step explanation:

The standard deviation of the difference between the means of the two populations is given by:-

[tex]S.E.=\sqrt{\dfrac{\sigma^2_1}{n_1}+\dfrac{\sigma^2_2}{n_2}}}[/tex]

where [tex]n_1[/tex]= sample size of population 1

[tex]n_2[/tex]= sample size of population 2

[tex]\sigma^2_1[/tex]= variance of population 1

[tex]\sigma^2_2[/tex]= variance of population 2

As per given,

[tex]S.E.=\sqrt{\dfrac{112.5}{45}+\dfrac{54}{36}}}\\\\=\sqrt{4}\\=2[/tex]

Hence, the correct option is D) 2.

Please answer asap. NO SCAM LINKS.

Answers

B is the answer I did that last week at my school

Pls help on this question and no bitly please. Also 15 points

Answers

Answer:

B

Step-by-step explanation:

elimination

4x - y = 8

6x + y = 2

--------------- +

10x = 10

x = 1

since x = 1, we can subtitute x to one of those equations

4x - y = 8

4(1) - y = 8

4 - 8 = y

y = 4 - 8

y = -4

x,y = 1,-4

Answer:

B is correct

Step-by-step explanation:

you add the two equations together. So 4x + 6x  equals what? 10x. we know that y and -y cancel each other out. and then we all know that 8+2 is 10. now we have 10x=10 so x=1. We replace x for one and then we have 4 - y =8 so y has to equal -4 and there you have your answer, b

I’ll give points + brainslist, if you don’t know don’t bother answering (:

Answers

C. 35 because c. Is the right answer just trust me ok

Mike borrowed some money for 2 years at 8% simple interest. If he had to pay back a total of $4060 how much did he borrow, how much did he originally borrow?

Answers

Answer:P = $ 25,375.00

Step-by-step explanation:

P = 4060 / ( 0.08 × 2 ) = 25375

P = $ 25,375.00

what are 3 different equations that have x=5 as a solution

Answers

Answer:

1) x+y=50

2) 5x+2y=200

3)2x+4y=200

Hope this helps!

Answer:

x+3=8, 2x-8=2, and 4x-4=16

Step-by-step explanation:

A building in a city has a rectangular base. The length of the base measures 70 ft less than twice the width. The perimeter of this base is 820 ft. What are the dimensions of the base?

Answers

Answer:

160 ft, 250ft

Step-by-step explanation:

Rectangular base:

Width = w

length =2w - 70

Perimeter = 820 ft

2*(length + width) = 820

2*(2w - 70 + w ) = 820

2 *(2w + w - 70) = 820     {Combine like terms}

2* (3w - 70) = 820

3w*2 - 70*2 = 820

6w - 140  = 820    

6w  = 820 + 140     {Add 140 to both side}

6w = 960     {Divide both sides by 6}

w = 960/6

w = 160 ft

length = 2*160 - 70

          = 320 - 70

          = 250 ft

any app where I can take pics of WORD PROBLEMS and get answers​

Answers

Answer:

well I know one you can try SOLVEITNOW

you can also try MICROSOFT MATH SOLVER

or CYMATH-MATH PROBLEMS SOLVER

a number divided by 22 .?
A)22/x, B)22+x, C)x/x-22, D)x/22​

Answers

Answer:

D

Step-by-step explanation:

Let the number be n.  Then "a number divided by 22" would be n/22 (Answer D)

The number divided by 22 can be written as x / 22, so option D is correct.

What is division?

It is a fundamental operation in mathematics where you divide a number into smaller parts.

Given:

A number divided by 22,

Here, the divisor = 22

Assume the number is x

Then, dividend = x

Thus, expression can be written as,

dividend/divisor = x / 22

To know more about division:

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Without solving, identify whether each of the following equations has a unique solution, no solution, or infinitely many solutions.
3.2 + 6 = -8
0 1 solution
O No Solution
O Infinite solutions

Answers

Answer:

No solution

Step-by-step explanation:

What is the volume of the figure?


HELP

Answers

Answer:

the anser is 88 i think

Step-by-step explanation:

beacuse 5.8=40

              5.8=40

               1.8=8

or it could be

264

Step-by-step explanation:

Figure on the left: 5x5x8 = 200

Figure on the right: 8x1x8 = 64

200+64=264

Answer:

264

Step-by-step explanation:

Figure on the left: 5x5x8 = 200

Figure on the right: 8x1x8 = 64

200+64=264

tell weather the fractions are equlivent

Answers

Answer:

Step-by-step explanation:

hello :

the fractions  a/b   and c/d are equlivent if : ad =cb

How many gallons are in of a 7-gallon container of milk?​

Answers

Answer:

7

Step-by-step explanation:

Uhh 7 divided by 1 is 7?

Answer:

7

Step-by-step explanation:

There are 7 gallons in a 7-gallon container of milk.

write an equivalent expression for -5 ( 3 - 2x ) , if you help I’ll sent 5$ via PayPal or whatever you use. Thanks.

Answers

Answer: 10 x - 15

Step-by-step explanation:

What percent of values is between the first and third quartiles?
its question 4

Answers

Answer:

answer

Step-by-step explanation:

5%

.......................

A triangle has vertices at B(-3,0), C(2, -1), D(-1,2). Which series of transformations would produce an image with vertices B"(4,1), C"(-1,0), D"(2, 3)?
O(x, y) - (X. -y). (x, y) (x + 1. y + 1)
O(x, y) - (-x, y). (X. y) (x + 1, y + 1)
O(x, y) - (x, -y), (x, y) (X + 2, Y + 2)
O(x, y) - (-x, y), (x, y) + (x + 2, Y + 2)

Answers

Answer:

  (b)  (x, y) ⇒ (-x, y); (x, y) ⇒ (x + 1, y + 1)

Step-by-step explanation:

A graph shows the image is consistent with reflection over the y-axis

  (x, y) ⇒ (-x, y)

and translation right 1, up 1

  (x, y) ⇒ (x +1, y +1)

These transformations are listed in the second choice.

__

In the attachment, the original image is blue, the reflected image is purple, and the final translated image is red.

SRRY BUT PLEASE HELP What percent is equivalent to 1/25?

4%
5%
20%
25%

Answers

Answer:

4%

Step-by-step explanation:

1/25 is equal to 0.04

To convert a decimal to a percent... move the decimal 2 spots to the right

This will give you 4%

Hope this helps!

HOW TO CONVERT 1/25 TO A PERCENTAGE?

To write 1/25 to a percentage, you must remember that 1 equals 100% and that what you must do is multiply the number by 100 and add the symbol% at the end.

[tex] \bold{1 /25 * 100 = 0.04 * 100 = 4\%}[/tex]

And finally we have:

[tex] \bold{1/25 \: a \: percentage equals 4\%}[/tex]

This data is an example of

A. a linear function

B. a nonlinear function

C. neither a linear nor nonlinear function - it is not a
function at all

Answers

Answer:

a nonlinear function I think because it's a quadratic one?? kinda

B because I learned about it

Im stuck only answer if your 100% sure. Will Mark Brainliest. ( Look at the picture for the problem.​

Answers

Answer:

[tex]3x^2(5y^2-xy+25x^2)\\[/tex]

Step-by-step explanation:

[tex]15x^2y^2-3x^3y+75x^4\\\\3x^2(5y^2-xy+25x^2)\\[/tex]

3x² is the only facor with all 3 of the terms.

What is the slope of y = x + 5?

Answers

Answer: look at the picture and I can’t solve y for you.

Step-by-step explanation: Hope this help :D

The answer is 5 is very simple like 5-5 is 0 and add 5 and 0 and their 5
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