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
ikadub [295]
3 years ago
13

50 students each did a mathematics test. the mean score for these 50 students was 8.4. there were 30 boys. the mean score for th

ese bots were 8.25. workout the mean score for the girls.
Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
7 0

[(30 x 8,25) + (20 x n)] / 50 = 8,4

247,5 + 20 x n = 420

n = (420 - 247,5) : 20

n = 8,625

You might be interested in
A dance school allows a maximum of 15 students per class. If 112 students sign up for dance class, how many classes does the sch
Talja [164]

Answer:

8

Step-by-step explanation:

Take 112/15

You get 7.4667

We make it 8 because you can't have .4667 of a class

Hope this helps

7 0
3 years ago
how do you get the answer for 1 5 over 8 and decimal 1.625 PLZ HELP I WILL GIVE YOU 50 POINTS FOR THIS
frutty [35]
1.625 as a fraction is 1 5/8

15/8 simplified is 1 7/8

if you are using the word "and" to represent multiplication here you go:

first i would change both fractions to a mixed number

13/8×15/8=195/64
simplify

your answer would be 3 3/64

if you are using "and" to represent adding here you go:

1.625 as a fraction is 1 5/8

first i would change 1 5/8 to a mixed number:  13/8

so then add 15/8+13/8=28/8

simplify:  
28÷4=7
8÷4=2

7/2=3 1/2
  
i hope this helped
7 0
3 years ago
Help Please? cx<br> Find a measure of angle 8.
Mila [183]
In the diagram, ∠2 and ∠6 are the same as well as ∠4 and ∠8. If we added ∠2 and ∠6, they would equal 180°...therefore, if we subtract 106 from 180, we are left with 74° for the answer to ∠8
3 0
3 years ago
in the problem 10 - 4=6 what is the correct term for the number 4? a) product b) subtrahend c) difference d) minuend
balu736 [363]
The answer is B. Subtrahend.
5 0
3 years ago
Read 2 more answers
Some please help me!!!!!!!!!!:(
OlgaM077 [116]

Answer:

ad fk kcfj dlajk jk djkfa ejk fks e

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Consider the following equation, bh+hr=25 when solving for h
    12·1 answer
  • Can someone help me with number five ???
    14·1 answer
  • What is the missing reason in step 3?
    8·2 answers
  • What's the answer to the problem
    13·1 answer
  • What is 4x + 3i * 7x +4i
    12·1 answer
  • At 3:00 p.m., Jamie leaves her house and drives north to the beach. She arrives at 5:30 p.m. Also leaving at 3:00 p.m., her brot
    11·1 answer
  • The length of a rectangle plus its width is
    8·1 answer
  • PLS AWNSER ASAP Cole went to the local coffee shop for his dad and cousin to treat them to a caffeinated treat. He spent a total
    12·1 answer
  • Write a problem based on the given information.
    7·1 answer
  • Luke's water bottle holds 2,150 milliliters. He drinks 3.5 bottles of water each day. How many milliliters of water does he drin
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!