The probability that roberto throws a baseball in the strike zone on one pitch is 0.72. roberto throws a baseball 3 times in a row.
a. create a probability distribution for x, the number of times roberto throws the baseball in the strike zone. show how you obtained each probability. round each probability to three decimal places.

P(X=0) = 3C0 (0.72^0)(0.28^3) = 0.022
P(X=1) = 3C0 (0.72^1)(0.28^2) = 0.169
P(X=2) = 3C0 (0.72^2)(0.28^1) = 0.435
P(X=3) = 3C0 (0.72^3)(0.28^0) = 0.373 

Notice how they all equal 1.

how am i supposed to answer

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!