When you want to add fractions with different denominators-which are the bottom numbers- you have to find the lowest numbers that you can multiply to go into both numbers. I know that you can multiply 8×3 to get 24. And that I can multiply 12×2 to get 24. So 24 would be what we change the denominators to.
But we can't just change the denominators. I have to change the numerators, too. Since I multiplied 8×3, I have to multiply the numerator by 3, also. 3×3=9. The new fraction is

.
Do the same thing to the other fraction. But we will multiply by 2. 1×2=2. So now we have

. We can now add.

+

Only add the top numbers. We have

That fraction cannot be reduced, so

is the final answer.
Answer:
C. is incorrect.
Step-by-step explanation:
Calculate the percentages for each prize desired by the 50 students responding in the sample survey. See the attached image for this calculation. Multiply these percentages times the total student body of 225 students to determine the likely selection for each prize (on the attachment).
A. is correct (126 students)
B. is correct
C. is incorrect. The total is (54 + 27) = 83
D. is true
1) Take the perimeter and divide it by 4.
2) Take the answer from step 1 and square it (multiply by itself)
Answer:
Hope this helps you
Step-by-step explanation:
Mean= 
Therefore, the mean of the given distribution =5.39 or 3.4
If you did not understand anything you can ask in the comments