Assume that the probability a child is a boy is 0.55 and that genders of children born into a family are independent. Determine the following probabilities: a. The probability that a family with 3 children has 1 boy and 2 girls.
b. The probability that a family with 3 children has 2 boys and 1 girl given that their first child is a boy.
c. The probability that a family with five children has 4 boys and 1 girl.

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

246

step-by-step explanation:

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.