Answer:
8
Step-by-step explanation:
To find the mean, or average of a data set, add all the values together, then divide by the number of values.
The data set is: 6,7,9,9,9
1. Add all the values
Add 6,7,9,9 and 9
6+7+9+9+9
40
2. Divide by the number of values
Count how many numbers are in the data set. In this case, there are 5 numbers.
Divide 40 by 5.
40/5
8
The mean of the data set is 8.
Our equation: 33x + 10 = 5 - 2x
Step 1:
To solve for x, we need to remember to isolate the variable (that is our way to solve for x). To do that, we add 2x on the right side of the equation to cancel -2x out. Then, we add 2x on the left of the equation. The equation becomes:

Step 2:
We subtract 10 from both sides (to cancel out the 10 on the left). Equation:

Step 3: Divide 35 on both sides to get our x value.

Answer:
Hope this helps!
Answer:
$2.6
Step-by-step explanation:
firstly we find percentage of tax .
(16/400) * 100
= 16/4
= 4 %
now ,
so 4% of 650
= (4*650)/ 100
=260/100
= $2.6