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
Oliga [24]
2 years ago
7

class A has 13 pupils and class b has 28 pupils both classes sit the same maths test the mean score for class A is 23 the mean s

core for class B is 57 what is the mean score (rounded to 2dp) in the maths test across both classes
Mathematics
1 answer:
Wittaler [7]2 years ago
7 0

Answer:

46.22

Step-by-step explanation:

Class A total= 23 x 13= 299

Clas B total= 57 x 28= 1596

total score= 299 + 1596 = 1895

total mean= 1895 ÷ (13+28) = 1895 ÷ 41

                 = 46.22

You might be interested in
Janie has \$3$3dollar sign, 3. She earns \$1.20$1.20dollar sign, 1, point, 20 for each chore she does and can do fractions of ch
madreJ [45]

Answer:

9

Step-by-step explanation:

13.50 - 3 = 10.50

1.20×8 = 9.60 = not enough

1.20×9= 10.80 = more than enough

She has to do 9 chores to have enough money including the 3 dollar she already has

8 0
3 years ago
Read 2 more answers
Someone plsnhelpy tysm if you do!:D im new to this thats why :))
Step2247 [10]

Answer:

83 is the answer

Step-by-step explanation:

hope this helps

3 0
3 years ago
Read 2 more answers
Can someone please help me solve this?
lord [1]

The answer should be about 13 as the sequence over 5 number is increasing by 20 so over each interval it should increase by 4.

3 0
3 years ago
Write the equation of the line perpendicular to 2x - 3y = 1 that passes through the point (3,-5) in slope-intercept form and in
a_sh-v [17]

Answer:

slope intercept form: 1/2x+3/2yx+16

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
If m∠ P = (19x -5) ∘ and Angle P is a right angle, find the value of x;
Alexandra [31]

Answer:

the value of x= 5

Step-by-step explanation:

hey there!

given;

<em>∠</em><em>P=90°( right angle)</em>

<em>now;</em>

<em>∠p=19x-5</em>

<em>90°+5°=19x</em>

<em>95/19=x</em>

<em>x=5</em>

<u><em>hope it helps!</em></u>

<em />

3 0
3 years ago
Other questions:
  • A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is –2 standard devi
    14·2 answers
  • Isaac made 2 quarts and 1 cup of cupcake batter. If 6 ounces of batter make one cupcake, and Isaac is making 10 cupcakes, how mu
    14·1 answer
  • PLEASEE HELPP TIMED
    6·2 answers
  • The range of the function f(x) = x + 5 is {7, 9}. What is the function’s domain?
    14·1 answer
  • PLEASE HELP
    7·1 answer
  • A boy weighs 31.5 kilograms.How much does he weigh in pounds.use the following conversion 1 kilogram is 2.2 pounds
    9·1 answer
  • Where do I start with this? it is a calc question. I thought perhaps relating the height to the length to get everything in term
    15·1 answer
  • When planting her garden, Frida is told the ratio of mulch to fertilizer is 1:6 bags. If she uses 4.5 bags of mulch, how much fe
    12·1 answer
  • An exponential function has the equation y = (0.5)^x-1. Four points from a different function as shown in the table. For what va
    10·1 answer
  • The use of performance materiality should:_____________.A. reduce the probability that the sum of immaterial and/or undetected m
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!