Answer:
C. The mean increases by 0.75.
Step-by-step explanation:
The mean of a data set is given by the sum of all its values, divided by the number of values.
Data set {10, 2, 8, 9, 5, 2, 6}
7 values
Sum: 10 + 2 + 8 + 9 + 5 + 2 + 6 = 42
Mean: 42/7 = 6
Adding number 12 to the data set
Now we have 8 values
The sum is 42 + 12 = 54
The mean is 54/8 = 6.75
This means that the mean increases by 0.75.
Okay, so Angelo had a dollars and spent 1/3 of that. So he spent 1/3a
Then, the amount he has left can be denoted as: (a - 1/3a)
Jimmy had j dollars and spent 1/2 of it:
So the amount he has left can be denoted as (j - 1/2j)
Since jimmy had more money left, you would subtract the amount angelo has from the amount that jimmy has left.
So: (j - 1/2j) - (a - 1/3a).
Answer: Prime factorization of 100 is 2 x 2 x 5 x 5 or 22 x 52
Prime factorization of 76 is 2 x 2 x 19 or 22 x 191
Prime factorization of 50 is 2 x 5 x 5 or 2 x 52
Prime factorization of 48 is 2 x 2 x 2 x 2 x 3 or 24 x 31