It was 4.2 because 1/5 equals to .2
False.
In a random sample each member of the group has the same chances to be choosen. A representative sample replicates the characteristcs that you want of the group. Many times you need to make the sampling not random to pick a sample that represents or replicates the group.
There are 40 black and 20 blue so if you divide by 20 the ratio is 2:1
Multiple the cost of the water bottle ($2.75) then whatever you answer is, you subtract that from 18. She should have $12.5 left. The most bags of popcorn she could get is 3. Just add $3.50 until it’s closes to the amounts of money she has left.
4, 10, 4, 10. 10*4 gives area of 40. 10+10+4+4 gives 48 as shown in question
