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
qaws [65]
2 years ago
12

Class A has 15 pupils and class B has 29 pupils. Both classes sit the same maths test. The mean score for class A is 35. The mea

n score for class B is 36. What is the mean score (rounded to 2 DP) in the maths test across both classes?​
Mathematics
1 answer:
sveta [45]2 years ago
3 0

Answer:

35.66

Step-by-step explanation:

Don't work with the mean given at first

1. Multiply the mean of class A by the number of students in class A

35 times 15=525

2. Multiply the mean of class B by the number of pupils in class B

36 times 29=1044

3. Add the answers you got

1044+525

4.Add the pupils of both classes

29+15=44

5.Then divide the total grades and pupils

1569/44 =35.659

6 Then round off

=35.66

You might be interested in
Whats a example for a equivalent expression?
Lera25 [3.4K]

Answer:

1/2 = 4/8

Step-by-step explanation:

An equivalent expression is when two fractions, decimals, or percents both match up because they are the same quantity as the other number.

The fractions above are an example of 1/2 and 4/8, which are equal to each others. The equation above is an example of an equivalent expression.

7 0
3 years ago
Read 2 more answers
Convert r=sec thaeta to rectangular form
Maslowich
Multiply both sides by <span>cos</span><span>
</span><span>r<span>cos<span>(θ)</span></span>=<span>sec<span>(θ)</span></span><span>cos<span>(θ)</span></span>=1</span><span>
</span><span>x=r<span>cos<span>(θ)</span></span></span><span>
</span><span>x=1</span>
3 0
4 years ago
Raul had $60. Mike had $30. Each boy donated 1 tenth of his money.
Sav [38]

Answer:

raul donated more money than mike did is

Step-by-step explanation:

raul donated 1/10 of 60 so

1/10*60=6

mike donated 1/10 of 30 so

1/10*30=3

so raul donated more money than mike did is the correct statement

5 0
3 years ago
Read 2 more answers
Find the value of x that makes lines u and v parallel
gogolik [260]

Answer:

x = 4 for Lines U and V to be parallel

<u>Skills needed: HS Geo, Angle Theorems, Equations</u>

Step-by-step explanation:

1) We see that there are two angle measures given to us. There is an angle marked with the measure of 130°, and the other is marked with (33x-2)°.

  • First of all, these two angles are categorized alternate interior angles. They are on alternate sides of the transversal, and are within the two lines (not on the outer side of the lines). I will add an image for reference regarding this idea.
  • If 2 lines are parallel, alternate interior angles are congruent. This means that: 33x-2=130

2) Solving this equation is fairly straightforward.

  • 33x-2+2=130+2 (add 2 to both sides in order to get the 33x by itself.
  • 33x\div33=132\div33 (to get x by itself)
  • 132 divided by 33 is 4, and 33x divided by 33 is x, so x=4

--------------------------------------------------------------------------------------------------------------Hope you understood, have a great day.

7 0
2 years ago
PLEASE HELP! See image. Which relation is a function?
stira [4]

Answer:

The answer to this is the lower right option.

Step-by-step explanation:

Just remember that no two points can share the same x.

7 0
3 years ago
Other questions:
  • After the price of a CD player had been reduced to 1/4 of its original price, it was sold for $48. What was the original price?
    9·2 answers
  • Find an equation for the plane containing the point (1, 2, 3) and parallel to the plane x 2y 3z
    14·1 answer
  • Four teachers by 10 origami books and 100 packs of origami paper for their classrooms they will share the cost of the Items equa
    15·1 answer
  • 9 out of 20 students ride the bus to school. Find the percent.
    9·2 answers
  • In triangle QRS the measurement of an angle RSQ is 29.1 and the measure of angle QRS is 70 degrees what is the measurement of sq
    14·1 answer
  • Hii please answer only if you know how its timed!! I REALLY NEED TO PASS
    12·1 answer
  • Write an equation in point-slope form for a line with a slope of 2/3 that passes through (-4,1)
    11·1 answer
  • A rectangular prism has a length of $\frac{5}{6}$ 5 6​​ inch and a width of 3 fifths$\frac{3}{5}$ 3 5​​ inch. The volume of the
    5·1 answer
  • I need help with these 3 questions plz
    11·2 answers
  • (16+3)-10÷5×3^2? with explanation step by step
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!