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
Fittoniya [83]
2 years ago
13

in a test marked out of 40,the marks of 10 students were 32,20,7,30,25,22,18,35,10,11.calculate the mean mark for the test

Mathematics
1 answer:
Kruka [31]2 years ago
3 0

Answer:

23.5

Step-by-step explanation:

25 + 22 = 47, 47/2 = 23.5

You might be interested in
From the diagram below, if the sides AD = 3 and DC = 27, and BD = X + 3, find x.
Colt1911 [192]

Given:

• AD = 3

,

• DC = 27

,

• BD = x + 3

Let's solve for x.

To solve for x, apply the altitude formula:

\frac{AD}{BD}=\frac{BD}{DC}

Where BD is the altitude.

Cross multiply:

BD^2=AD*DC

Plug in the values and solve for x:

\begin{gathered} (x+3)^2=3*27 \\  \\ (x+3)^2=81 \end{gathered}

Take the square root of both sides:

\begin{gathered} \sqrt{(x+3)^2}=\sqrt{81} \\  \\ x+3=9 \\  \\ \text{ Subtract 3 from both sides:} \\ x+3-3=9-3 \\  \\ x=6 \end{gathered}

Therefore, the value of x is 6 .

ANSWER:

d. 6

4 0
1 year ago
8x-4=2(4x-4) math question
EleoNora [17]

Answer:

No solution.

Step-by-step explanation:

8x - 4 = 2(4x - 4)

8x - 4 = 8x - 8

-4 = -8

-4 ≠ -8

8 0
3 years ago
If AB = 10, BD = 5, and DE= 12, what is the length of BC?
FrozenT [24]

Answer:

BC = 24

Step-by-step explanation:

In the picture attached, the missing triangles are shown:

<u>Data</u>

  • AB = 10
  • BD = 5
  • DE= 12
  • Then, AD = 10-5 = 5

As a consequence of the "Side Splitter" Theorem:

AD/DE = AB/BC

Replacing with data and solving for BC

5/12 = 10/BC

BC = 10*12/5 = 24

4 0
3 years ago
13 divided by 10 and 5 sixths in fraction form
xxTIMURxx [149]

Answer:

its 1 1/2

Step-by-step explanation:

Its 1 1/2 or 6/5

7 0
3 years ago
What percent of 40.4 is 50.5
k0ka [10]
50,5-100%
40,4-х%
x=(40,4*100)\50,5=80%
Answer:80%
5 0
3 years ago
Other questions:
  • carl needs to take 2 pairs of jeans and 4 shirts for every 4 days he spends at church. He spends 14 days.
    12·1 answer
  • A computer randomly selects a number from the given set.
    8·2 answers
  • How do you simplify the radical: square root of 28
    10·1 answer
  • What is the solution to the system of equations below?
    13·2 answers
  • 5/6k=1/6 solve for k
    9·2 answers
  • Help mee<br> please.......................... :3 :3
    5·2 answers
  • Factor the expression: 5x^3 + 10x^2 + 15x
    8·1 answer
  • PLEASE PLEASE PLEASE HELP ME!!!!!!!!!!!!!
    7·1 answer
  • A ladder leans against a building. If the ladder reaches 18 feet up the wall and contacts the ground 5 feet from the building, w
    12·1 answer
  • In<br> What is the area of this triangle?<br> inz<br> h = 5 in.<br> b = 10 in.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!