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
STatiana [176]
3 years ago
6

The arithmetic mean of ten boys is 8 years, 6 months one of them is 13 years old. Then the arithmetic mean of remaining 9 boys i

s
a)9.5 b) 9 c) 8 d) 7
Mathematics
1 answer:
FrozenT [24]3 years ago
3 0
<span>The arithmetic mean of ten boys is 8 years, 6 months = 8.5 years
total age = 10* 8.5 = 85 years

one of them is 13 years
total age of rest = 85 - 13 = 72 years
mean of rest = 72/9 = 8 years

Answer is C) 8 years
</span>
You might be interested in
Kendall has 37 inches of yarn to create an outline of the Big Dipper for her science project. Which equation could be used to fi
ss7ja [257]

<u>Answer:</u>

The equation could be used to find out how many inches of yarn will be left when Kendall has finished the project is option D. Not enough information is given

<u>Solution:</u>

Given, Kendall has 37 inches of yarn to create an outline of the Big Dipper for her science project.  

We have to find which equation could be used to find out how many inches of yarn will be left when she has finished the project?  

In order to find how many inches of yarn left we just need to subtract the used amount of yarn from available piece of yarn, but we are not given any information about the amount of used piece of yarn.  

So, not enough information is given,

Hence, option d is correct

4 0
4 years ago
Joe reads 30 chapters of a book in 6 hours What is his rate in chapters per hour
Murrr4er [49]

Answer:5

Step-by-step explanation:

30 chapters in 6 hours. 30/6 =5

8 0
3 years ago
Read 2 more answers
What'd the greatest common factor (GCF) for each pair of numbers. 25, 55 The GCE IS​
Alina [70]

Answer:

5

Step-by-step explanation:

5 l 25,55

   l 5,11

6 0
3 years ago
Someone plz help me with this
Maurinko [17]
I think x is also 46
4 0
3 years ago
Read 2 more answers
Evaluate and simplify the expression when a = 3 and b = 2. 3b-2(1 - b) a - 2 II [ ? ] Enter Copyright © 2003.2010​
tatuchka [14]

Correct question:

Evaluate and simplify the expression when a = 3 and b = 2,

given expression =  3b-2(1 - b)a - 2

Answer:

3b-2(1 - b)a - 2 at the given values is 10.

Step-by-step explanation:

Given;

3b-2(1 - b)a - 2

The expression is simplified as;

3b-2(1 - b) a - 2 = 3b - 2a(1 - b) - 2

                         = 3b - 2a + 2ab - 2

When a = 3 and b = 2; then, substitute these values in the simplified expression above;

3b - 2a + 2ab - 2 = 3(2) - 2(3) + 2(3 x 2) - 2

                            = 6 - 6 + 12 - 2

                            = 10

Therefore, 3b-2(1 - b)a - 2 at the given values is 10.

8 0
3 years ago
Other questions:
  • a number, n, is added to 15 less than 3 times itself.The result is 101.Which equation can be used to find the value of n? 3n-15+
    8·1 answer
  • Let n=0.222…
    15·1 answer
  • Simplify this expression 2x-3y-x-y
    13·1 answer
  • A liscense plate consists of 2 letters followed by 4 digits. If the two letters must be different and the first digit cannot be
    12·1 answer
  • Which description best fits the graph
    10·2 answers
  • A bakery sold 104 cupcakes in one day. The head baker predicted he would sell 84 cupcakes that day. What was the percent error o
    11·2 answers
  • Someone do as much of the page as possible (ill mark brainlyless)
    11·2 answers
  • Which table shows exponential decay?
    14·1 answer
  • <img src="https://tex.z-dn.net/?f=5%20%7Bx%7D%5E%7B2%7D%20%20-%202x%20%2B%203x%20%3D%209%20%7Bx%7D%5E%7B2%7D%20%20%2B%209x" id="
    14·2 answers
  • Alex bought soccer shoes on sale
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!