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
Verdich [7]
3 years ago
12

The average of three numbers is 25. The average of two of those numbers is 21. What is the value of the third number of the orig

nial three? a 32 b 33 c 34 d 35
Mathematics
1 answer:
Elza [17]3 years ago
8 0

Answer:

b) 33

Step-by-step explanation:

You reverse the process of finding the second average, 21, which will help you find the original average, 25. First you multiply the second average, 21, to retrace your steps. We do this because the last thing we do when we find the average is divide. when you multiply 21 you get 42. Now you have the value of the first two numbers. Then you experiment with the numbers. To save time I'll get to the point. When you add 33 + 42 you get 75. Then you divide by 3 to get 25. You divide by three because the instructions say there was 3 numbers to start with. Hope this helps.

You might be interested in
Please help, 20 points.<br> Perimeter :)
djyliett [7]

Answer:

<h2>D. (42 - 2x)(32 - 2x) = 900</h2>

Step-by-step explanation:

<em>Look at the picture.</em>

The dimensions of the picture:

(42 - 2x)in × (32 -2x)in

The formula of an area of a rectangle:

A = l · w

l - length, w - width

Substitute l = (42 - 2x), w = (32 - 2x) and A = 900

(42 - 2x)(32 - 2x) = 900

8 0
3 years ago
Mr. Tola has a piece of wood that is
Gre4nikov [31]

Answer:

I think he can get 24ft pieces of wood im not sure dont hold me to it im not very good at math but I think thats right if it isnt i am sorry

8 0
2 years ago
If anyone knows answer with steps that will be greatly appreciated :)
OLga [1]

Answer:

The area formula is= 1/2(a+b)×height

1/2×20×6=60metres squared

Step-by-step explanation:

kindly correct me if am wrong

6 0
2 years ago
Gina decided to order some clothes from a catalog she ordered three pairs of jeans at $39 each for t-shirts at $15 each and 2 st
Scilla [17]
Her total bill is $186 because :
(3x39)+15+(2x27)
3 0
3 years ago
How do you solve -5y-6y=-22
Wewaii [24]
-5y-6y is -11y=-22 so y=2
5 0
3 years ago
Other questions:
  • 3x + 2 = 14 Which number makes the equation true?<br> A) 1 <br> B) 2 <br> C) 4 <br> D) 6
    14·2 answers
  • The diameter of fishing line varies. Fishing lines can have a diameter as small as 2 x 102 inch and as large as 6 x 10-2 inch. H
    14·1 answer
  • Perform the operation. (10x2 – 10x – 6) + (x+6)
    6·1 answer
  • Please help I'm really stuck!
    15·2 answers
  • in the afternoon the temperature was 52 f. A strong arctic cold front caused the temperature to drop to 38 degrees in 4 3/4 hour
    5·1 answer
  • What is the exponent for the expression?<br> 2x2=?
    13·2 answers
  • Please help i’ll give brainless and show your work &lt;3
    11·2 answers
  • 4×8 is it positive or negative<br>​
    9·2 answers
  • The frequency table shows the results asking people how many hours they spend online per week
    10·1 answer
  • Multi step equation -3x-2=-1
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!