The discount was 25% off use 21/28 which is 75 percent of what it was before. 25 percent off.
Answer:
0.52763 is the probability that the time between the next two calls will be 54 seconds or less.
0.19285 is the probability that the time between the next two calls will be greater than 118.5 seconds.
Step-by-step explanation:
We are given the following information in the question:
The time between telephone calls to a cable television service call center follows an exponential distribution with a mean of 1.2 minutes.
The distribution function can be written as:

The probability for exponential distribution is given as:

a) P( time between the next two calls will be 54 seconds or less)

0.52763 is the probability that the time between the next two calls will be 54 seconds or less.
b) P(time between the next two calls will be greater than 118.5 seconds)

0.19285 is the probability that the time between the next two calls will be greater than 118.5 seconds.
The another way to represent the same line, for solving
will be: 
<u><em>Explanation</em></u>
Given equation of the line is: 
"Solving
" means <u>we need to get</u>
<u>alone in left side.</u> So, we will eliminate all other terms except
from the left side.
First we will <u>subtract 2x </u>from both sides. So, we will get......

Now, we will <u>divide both sides by 3</u> for getting
alone. So.....

Thus, the another way to represent the same line, for solving
will be: 
Answer:
cosa = 3/5
Step-by-step explanation:
Use Trignometrical identity cosa = √
1
−
sin
^2a
cos a = √
1
−
16
/25 = √
9
/25 = 3
/5
Answer:
−
8
x^
2
+
62
y
^2
+
46
Step-by-step explanation:
heheheh I do math lol