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]
2 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]2 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
The carnival fundraiser at Westville Elementary School raised $300 on Friday. On Saturday, the carnival will raise 480 percent o
kiruha [24]

Answer:

your answer for 300+480=780 . that was on Saturday , now you have $780 the carvinal..raised 1480 .

Step-by-step explanation:

tell me if I'm wrong thank u (:

6 0
3 years ago
2/5 ÷ 2/3 = 2/5 x _=_<br>​
natali 33 [55]

Answer:

the answer is 1 I guess

Step-by-step explanation:

2/5 - 3/5

2-3/5

1

7 0
3 years ago
Which of the following terms is described as “the ratio of two polynomial
Sergio [31]

Answer:

rational algebraic expression

8 0
2 years ago
Which of the following could be the graph of the equation y = -2x? *<br> please answer
mihalych1998 [28]
B.

The line starts at the origin and goes down by two.
6 0
3 years ago
PLZ help me with this.
german

If you search the internet you can find the answer I hope you can find the answer

5 0
3 years ago
Other questions:
  • 2 1/8 divided by 2 =
    13·2 answers
  • A function f^-1 (x) contain the points (-2,3), (0,-1), (2,2), and (4,6). give the points known to be in the function of f(x).
    14·1 answer
  • 10 points to the person who answers this whole thing and I will mark you as brainliest.
    9·1 answer
  • Use the point (-6,-8) to give the six trigonometric functions
    11·1 answer
  • Help plz ASAP Find the value of x
    7·1 answer
  • In a particular class of 24 students, 14 are men. what fraction of the students in the class are men
    8·2 answers
  • The function = 3describes the volume of a cube, , in cubic inches, whose length, width, and height each measure inches. Find the
    8·1 answer
  • What is the value of X
    11·2 answers
  • Which equation represents a line which is parallel to x = 0?<br> helppp pleaseee
    7·2 answers
  • Write the number twenty one thousand and sixty four in figures
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!