Is there supposed to be a attached file? Or are you confused about the topic in general. I can help if need be. I’ll start off with saying that a system of equation is two equations that either have infinite, no, or one solution. This solution makes x true for both equations. x will be the same value for each equation.
I believe this problem has the following table for long
distance call:
0-1 minutes 2-5 minutes 6+ minutes
Long distance 170 120 10
To solve this problem, let us first recall what
probability means:
Probability = number of successful event / number of
total events
In this case, an event is considered to be successful
when the long distance call is not 6+ minutes long. Therefore:
number of successful event = 170 + 120 = 290
Now the number of total events is the sum of all number
of calls, hence,
number of total events = 170 + 120 + 10
number of total events = 300
Probability that the call is not 6+ minutes long is
therefore:
Probability = 290 / 300
Probability = 0.9667
or
Probability = 96.67%
Answer: 604.30
Step-by-step explanation:
You round it two to the right and add the number to the left by one every time the number is over 5.
It is on sale for 50 percent so 320 is = 50 percent
100 percent = 640