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
Sansa wrote this expression:
NISA [10]

Answer:

34 is the answer

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I need help solving this problem with proofs if at all possible
k0ka [10]

I don't really like these algebra problems which pretend to be geometry.

The bisector makes two equal angles, so

x/2 + 17 = x - 33

50 = (1/2) x

x = 100

That means ABC = 100/2 + 17 = 67 degrees

CBD = 100 - 33 = 67 degrees, equal so that checks

We're asked for ABC which is 67 + 67 = 134 degrees

Answer: 134°

4 0
3 years ago
Read 2 more answers
HELP ME WITH 6-10 PLS
adelina 88 [10]

6. = 0.0000004834

7. = 0.0000506

8. = 0.00098

9. = 64580000

10. = 1398600000

7 0
3 years ago
Is the line of best fit y=-2.9114x+40.7464 or y=-2.9114x+46.5693 ? Please help i’m in a rush!
Colt1911 [192]

Answer:

line of best fit: y = -2.9114x + 46.569

Step-by-step explanation:

Plugging in your table into Excel, it turns out that y = -2.9114x + 46.569  provides a better fit of the data points into the line.  Please see the attached image for details.

Hope this helps.

3 0
2 years ago
||<br> o34<br> 38<br> o33<br> оз10<br> Y’all what this is ?
Effectus [21]

Answer:

i think its the 3rd one im sorry if im wrong

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • Use the change of base formula to evaluate the logarithms to the nearest thousandth.
    14·2 answers
  • 1(10-4•4) 20 divided by -2
    10·1 answer
  • Two trees are in a garden. The 20-foot tree casts a shadow four feet long. If the other tree is 15-foot tall, how long will its
    8·1 answer
  • What is the distance between (-4,8) and (12,8) on a coordinate plane?
    7·1 answer
  • An animal shelter currently only has 30 dogs and 20 Cats. What is the ratio cats to animals?
    7·2 answers
  • Let S be the set of all integers k such that, if k is in S, then <img src="https://tex.z-dn.net/?f=%5Cfrac%7B17k%7D%7B66%7D" id=
    9·1 answer
  • (x + 2)(x2 + 5x + + 1)
    14·1 answer
  • &lt;) Madison is organizing a 10K race. She is ordering cases of bottled water for the runners.
    14·1 answer
  • If 7x+2y =3 and x-3y=30, what is the value of y?<br><br><br>​
    13·1 answer
  • Select the graph that represents two quantities in a proportional relationship.​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!