Answer:
15
Step-by-step explanation:
12+3=15
How many ft was each piece ? I need to know to help you
3x+7+10x+17=180
13x+24=180
Subtract 24 from both sides
156/13
x= 12
Answer:
0.3216 = 32.16% probability that, in any seven-day week, the computer will crash less than 3 times
Step-by-step explanation:
In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

In which
x is the number of sucesses
e = 2.71828 is the Euler number
is the mean in the given time interval
Mean of 0.5
7-day week, so 
What is the probability that, in any seven-day week, the computer will crash less than 3 times?

In which





0.3216 = 32.16% probability that, in any seven-day week, the computer will crash less than 3 times
She can make 6 pies.
Subtract 9-1.5=7.5
then 7.5/1.25= 6.04