The mean is the average...to find the mean, add up all the numbers, then divide by how many numbers there are.
Example :
ur set of numbers : 1,2,3,4
add up all the numbers and divide by how many there are :
(1 + 2 + 3 + 4) / 4 = 10/4 = 2.5...so 2.5 is ur mean (average)
Reduce the fraction using 3
13/15+1/8
13/15=1/5
1/5+1/8
8+5/40
fraction response: 13/40
answer in decimal numbers: 0.325
Answer:
3.5 
Step-by-step explanation:
If the shape is half of a circle, you will be using this formula: A = 
π 
Your radius is half of the diameter. r = d/2 = 3/2 = 1.5
Substitute r = 1.5 into the formula.
A = π 
A = (3.14)
Use your calculator to find the answer and round your answer.
3.5
Adding a negative number is the same as subtracting a positive number. So 2315.5 - 3166.75 = -851.25
