81. a negative times a negative is a positive
Add all of the possible outcomes which is 130. Take the amount of circle cards and put that number in the numerator. So, 91/130 and divide. Which equals .7 so, move the decimal two places to the right to get 70% chance of selecting a circle card.
See below the theee of possibilities:
BBBB
BBBG
BBGB
BBGG
BGBB
BGBG
BGGB
BGGG
GBBB
GBBG
GBGB
GBGG
GGBB
GGBG
GGGB
GGGG
There are 16 differents possibilities.
In 11 of them have at least 2 boys
So probability is 11/16
Answer:
3600 miles on 240 gal
Step-by-step explanation:
80 gal can go 1200
160 gal can go 2400
240 gal can go 3600