Martha types a 4-digit code into a keypad to unlock her car doors. The code uses the numbers 1 and 0. the digits are selected at random, what is the probability of getting a code with exactly three 1's? Enter
your answer as a simplified fraction.
The probability of getting three 1's is

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p

sas (side angle side)

aa(angle angle)

sss(side side side)

sas you have to find two sides with an angle in between

aa you find two angles because it will always add up to 180

sss find all sides

step-by-step explanation:

example answer: "to determine if a sum is reasonable you can round each number to the nearest whole and compare the estimated sum to the actual sum."

hope this you and anyone else who needs the answer : ^)