A collection of 8 backpacks has a mean weight of 14 pounds. A different collection of 12 backpacks has a mean weight of 9 pounds. What is the mean weight of the 20 backpacks?

0.1235

Step-by-step explanation:

Divide 14 and 8 and also divide 12and 9 then u take those two answers and add them up and you divide that answer by20

11

Step-by-step explanation:

To calculate total weight of 8 backpacks. You multiply 8*14=112

To calculate total weight of 12 backpacks is 108 pounds. 12*9=108

Next, you have to calculate the total weight of the whole 20 backpacks 112+108=220

Lastly, you find the mean weight of 20 backpacks. So you divide 220 by 20.

11 pounds

Hope this helped!

wholesale price is the initial price before markup. retail price comes after the markup.

a price of 8 bucks that's marked up by 100%   is

formula: initial price + (percent markup in fraction/decimal)(initial price)

8+(1)(8)

8+8

16

retail price is $16.

addition

step-by-step explanation: