Correct answer only !

jack is a farmer and he wants to know the mean weight of all the potatoes in a sack.

he randomly selects 10 potatoes and weighs them. their weights, to the nearest ounce are 5, 8, 9, 11, 7, 7, 8, 9, 12, and 7.

what is the best estimate of the mean weight of all the potatoes in the sack?

round to the nearest ounce.

 8.3

Step-by-step explanation:

Mean is "average"

Add the numbers and divide their sum by the number of potatoes (10).

     5 + 7 + 8     +      9 + 11      +       7 + 8      +     9 + 12 + 7

=        20           +        20        +         15         +         28

= 83

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5