The variable was whether people approve or disapprove of the president. They were trying to poll just the people that live in the main part of the USA. There is slight bias that comes from excluding Alaska and Hawaii.
8 girls 12 boys = 20 total
12/20= 3/5 = .6 *100 =
60% is the first answer
34 trees (3 types) +? Scotch pines
= 50 total
50-34= 16/50*2 = 32/100=
32% scotch pines is the second answer
20 grapes 1 pear
13/20*5 = 65/100 =
65% grapes third answer
Found 20 | did not find 5 | 25 total
5/25*4= 20/100=
20% is the fourth answer
The perimeter of the rectangle is 64
The answer would be a total of 9 blue stripes.
