To find the mean you add all the numbers and divide it by the amount of numbers there is so add
6+9+15+22+30+36=118
there is 6 number so divide 118 by 6
118/6=<span>19.6666666667 rounded to the nearest tenth it would be 20
So your mean would be 20
let me know if you have any questions</span>
Answer:
cups plaster of paris.
Step-by-step explanation:
Given:
for one batch of sidewalk chalk = 
cup plaster of paris.
Number of bathes = 3
We need to find quantity of plaster of paris.
Solution:
For making 1 batch of sidewalk chalk = cup plaster of paris.
For making 3 batches of sidewalk chalk = 
cup plaster of paris.
Therefore, he needed cups plaster of paris.
we know that
step 1
multiply 
by 
so
step 2
Divide numerator and denominator by 
therefore
the answer is
Answer:
1/2(x+7)
Step-by-step explanation:
By setting up a system of equations we can easily solve this problem. Let's denote Jane's working hours with x and Jack's working hours with y. Since they don't want to work more than 65 hours, the first equation is x+y=65. The second equation is 14x+7y=770. By solving this system of equation , we find that y=20 hours, which is Jack's maximum working hours.
