Answer:
32
Step-by-step explanation:
A = l*w
55 = 5*w
55 /5 = 5w/5
11 = w
The perimeter is
P =2(l+w)
P = 2(5+11)
=2(16)
= 32
10.
5 multiplied by 2 "5 x 2" = 10
Answer:
either -24=-12*2 or -12*2=-24
Step-by-step explanation:
depends how you need to write it.
Answer:
36.58% probability that one of the devices fail
Step-by-step explanation:
For each device, there are only two possible outcomes. Either it fails, or it does not fail. The probability of a device failling is independent of other devices. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
A total of 15 devices will be used.
This means that 
Assume that each device has a probability of 0.05 of failure during the course of the monitoring period.
This means that 
What is the probability that one of the devices fail?
This is 


36.58% probability that one of the devices fail
In the default window of a graphing calculator, there is only one intersection that you see.
However, if you zoom out, you will see that they are 3 intersections to the pair of equations.