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marysya [2.9K]
3 years ago
7

At the karate school, Class A has 8 students with an average age of 6 years. Class B has 12 students with an average age of 9 ye

ars. The classes combine for a group workout.
What is the average age of the combined classes?

Enter your answer as a decimal in the box.
Mathematics
2 answers:
Murrr4er [49]3 years ago
7 0

Answer: I took the test and the answer is 7.8

Good luck!

ELEN [110]3 years ago
3 0
IT IS 7.8 AND I  KNOW IT IS RIGHT
You might be interested in
-3(x - 2) - (2x - 3) = 5 - (4x - 2)
STatiana [176]

Answer:

x=2

Step-by-step explanation:

-3*(x-2)-(2*x-3)-(5-(4*x-2))=0

((0 -  3 • (x - 2)) -  (2x - 3)) -  (7 - 4x)  = 0

2 - x  = 0

-x+2 = 0

Subtract  2  from both sides of the equation :

                     -x = -2

Multiply both sides of the equation by (-1) :  x = 2

4 0
3 years ago
Read 2 more answers
Help plz:))) I’ll mark u brainliest <br> ASAP!!!
8090 [49]

Answer:

x=16

Step-by-step explanation:

Hope this helps

8 0
2 years ago
Can someone please help, answer with steps.
julsineya [31]

Your Answer Is C) III Only.

A temperature increase of 5/9 degrees Fahrenheit is equivalent to a temperature increase of 1 degree Celsius.

One way we could check is by multiplying (f -32) by five degrees.

( f - 32 ) = 31

9 / 5 = 1.8

31 * 1.8 = 55.8

55.8 / 14^2 = 0.28

Now, let's check,

0.28 / 1.8 = 0.504

0.504 * 28.1232 = 55.8

Or it could be solved by keeping on adding. (That would be easier but I prefer multiplying.)

- Please Mark Brainliest, This Took me a while. :v

8 0
2 years ago
Can anyone help me with this math stuff? :p
Mars2501 [29]

Answer:

if the recipe makes 48 cookies and the serving size is 3 then you should actually can just make the regular recipe and have 9 cookies leftover

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP I WILL MARK YOU BRAINLIEST!!!!
Mrac [35]

Answer:

the answer is C.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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