On a supermarket shelf, there are 56 gallons of milk. 7 of them are past their expiration date. Joan buys 4 gallons of milk for her large family and never looks at the dates. Find the probability that
1)
a) all of them are within their expiration date
b) at least one gallon has its date expired

the answer to your question a or b but i am pretty sure it is b. i hope this : )

step-by-step explanation:

1,918

step-by-step explanation:

i will with my problems and all the other things that need to   be on by the way

step-by-step explanation:

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !