Answer: option d.
Step-by-step explanation:
You have the following formul given in the problem:
![p=1-e^{-mt}](https://tex.z-dn.net/?f=p%3D1-e%5E%7B-mt%7D)
You know that:
The number of customers serviced in an hour by the technical support representative is 6 costumbers, therefore:
![m=6](https://tex.z-dn.net/?f=m%3D6)
As the problem asked for the probability that a costumber will be on hold less than 30 minutes, we know that:
![t=0.5](https://tex.z-dn.net/?f=t%3D0.5)
Substitute the values above into the formula.
Then, you obtain:
or 95%
Answer:
Step-by-step explanation:
x²-10x = 12
Coefficient of the x term: -10
Divide in half: -5
Square it: (-5)² = 5²
Add 5² to both sides:
x²-10x+5² = 12+5²
(x-5)² = 37
Answer:
f = - ![\frac{19}{7}](https://tex.z-dn.net/?f=%5Cfrac%7B19%7D%7B7%7D)
Step-by-step explanation:
Given f varies directly with m then the equation relating them is
f = km ← k is the constant of variation
To find k use the condition f = - 19 when m = 14
- 19 = 14k ( divide both sides by 14 )
-
= k
f = -
m ← equation of variation
When m = 2 , then
f = -
× 2 = - ![\frac{19}{7}](https://tex.z-dn.net/?f=%5Cfrac%7B19%7D%7B7%7D)
Try 18 and then multiply the sum of 2 and 18 to 7
Answer:
radius = ![\sqrt{73}](https://tex.z-dn.net/?f=%5Csqrt%7B73%7D)
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
(x - 1)² + (y + 3)² = 73 ← is in standard form
with r² = 73 ( take the square root of both sides )
r = ![\sqrt{73}](https://tex.z-dn.net/?f=%5Csqrt%7B73%7D)