1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
adelina 88 [10]
1 year ago
8

Class A has 15 pupils and class B has 29 pupils.

Mathematics
1 answer:
Vaselesa [24]1 year ago
6 0

The mean score (rounded to 2 DP) in the Math's test for class B is 86.86.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Class A has 15 pupils and class B has 29 pupils. The mean score for class A is 55. Hence:

Mean score of A = (sum of all scores) / 15

55 =  (sum of all scores) / 15

sum of all scores in A = 825

The mean score for both classes is 76. Hence:

[(sum of all scores in A) + (sum of all scores in B)]/(total number of pupils) = mean score of both classes

[825 + (sum of all scores in B)]/(15 + 29) = 76

sum of all scores in B = 2519

Mean score of B = (2519) / 29 = 86.86

The mean score (rounded to 2 DP) in the Math's test for class B is 86.86.

Find out more on equation at: brainly.com/question/13763238

#SPJ1

You might be interested in
How much money will Danny have in her account after one year
shusha [124]

Answer:

2080

Step-by-step explanation:

4 0
3 years ago
Miss hit travel 21120 ft how many miles did she travel
Sunny_sXe [5.5K]

4 miles because there are 5280 ft in one mile so if you were to multiply that by 4 you would get 21120 ft

5 0
3 years ago
For a linear regression, what is the r-value of the following data to three
Nuetrik [128]

Answer:0.816

Step-by-step explanation:

Ape x

3 0
3 years ago
The new post office has an area that is 6.5 times the area of the old post office. Let p represent the area of the old post offi
IrinaK [193]

Answer:

Area = 6.5p

Step-by-step explanation:

Given

Area\ of\ Old = p

Area\ of\ New = 6.5 * Area\ of\ Old

Required

Write an expression for the area of new post office

From the question, we have the following:

Area\ of\ Old = p

and

Area\ of\ New = 6.5 * Area\ of\ Old

Substitute p for Area of Old in the second equation

Area\ of\ New = 6.5 * p

Area\ of\ New = 6.5 p

Hence, the expression is:

Area = 6.5p

5 0
2 years ago
Georgia want to end letter to 12 of her friend. Half of the letter will need 1 page each and the other half will need 2 page eac
kifflom [539]

The total no: of pages needed are 18 pages

<h3>What is the unitary method?</h3>

A fundamental idea behind the unitary method is using the value of one unit to determine the values of additional units. Study up on the unitary method. With an increase in units, the value of additional units rises.

<h3>What is unitary set?</h3>

The general unitary group, also known as the group of unitary similitudes, is simply the product of the unitary group and the group of all positive multiples of the identity matrix. It includes all matrices A such that AA is a nonzero multiple of the identity matrix.

According to the question:-

The no: of pages needed for 6 letters = 6

The no: of pages needed for the other 6 letters= 6*2

                                                                              =12

Total no: of pages are 18

Hence, the total no: of pages are 18

To know more about unitary method click the following link:-

brainly.com/question/24587372

#SPJ4

3 0
1 year ago
Other questions:
  • Help on number four please?​
    13·1 answer
  • Is 40 a multiple of 8
    13·1 answer
  • What is the equivalent fraction of 56/8
    12·2 answers
  • World war 1 lasted from August 4th 1914 until November 11th,1918.During this time an estimated 10million lives were lost.About h
    5·1 answer
  • Find the surface area of the figure. ft
    10·2 answers
  • Seth makes an array with 6 rows and 9 columns. Miri makes an array of 9 rows and 6 columns.
    15·1 answer
  • ILL GIVE BRAINLYEST TO WHOEVER IS CORRECT PLEASE
    8·2 answers
  • Help will mark brainliest
    7·2 answers
  • -p^3+2p^2-p polynomial
    6·1 answer
  • 2. Bacterial Culture Problem: When you grow a
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!