Answer:
Top Left in I.M.
Step-by-step explanation:
Trust me
Since it is at least 3 means that the club must bring 3 or more ideas so x>=3 which is choice d
Answer:
D) Only (-1,9) is a solution.
Step-by-step explanation:
x+y =8
x^2 + y = 10
Lets check the first point (-1,9)
Put in x =-1 y =9
x+y =8
-1+9 = 8
8 =8
This works
x^2 + y = 10
(-1)^2 +9 =10
1+9 = 10
10 = 10
This works
Lets check the second point (-2,6)
Put in x =-2 y =6
x+y =8
-2+6 = 8
4=8
This does not work
We can stop now. (-2,6) cannot be a solution
Answer:
z^1+3z+2
Step-by-step explanation:
(z+1)(z+1)
Multiply each term in the first parenthesis by each term in the second parenthesis
Z x z+2z+z+2
Calculate the product
<u>z</u>^2 +2z+z+2
collect like terms
z^2+3z+2
2z+z
If a term doesnt have a coefficient it is considered that the coefficient is 1
2z+1z
(2+1)z
(2+1)z
3z
z^2+3z+2
Answer:
The probability that, in any hour, less than 2 customers will arrive is 0.0067.
Step-by-step explanation:
The random variable <em>X</em> can be defined as the number of customers arriving hourly at the drive-through window at the Fidelity Credit Union.
The random variable <em>X</em> describes a finite number of occurrences of an event in a fixed time interval.
The random variable <em>X</em> follows a Poisson distribution with parameter <em>λ</em> = 7.1.
The probability mass function of <em>X</em> is:
![P(X=x)=\frac{e^{-7.1}(7.1)^{x}}{x!};x=0,1,2,3...](https://tex.z-dn.net/?f=P%28X%3Dx%29%3D%5Cfrac%7Be%5E%7B-7.1%7D%287.1%29%5E%7Bx%7D%7D%7Bx%21%7D%3Bx%3D0%2C1%2C2%2C3...)
Compute the probability of less than 2 customers arriving as follows:
![P(X](https://tex.z-dn.net/?f=P%28X%3C2%29%3DP%28X%3D0%29%2BP%28X%3D1%29)
![=\frac{e^{-7.1}(7.1)^{0}}{0!}+\frac{e^{-7.1}(7.1)^{1}}{1!}\\\\=0.00083+0.00586\\\\=0.00669\\\\\approx 0.0067](https://tex.z-dn.net/?f=%3D%5Cfrac%7Be%5E%7B-7.1%7D%287.1%29%5E%7B0%7D%7D%7B0%21%7D%2B%5Cfrac%7Be%5E%7B-7.1%7D%287.1%29%5E%7B1%7D%7D%7B1%21%7D%5C%5C%5C%5C%3D0.00083%2B0.00586%5C%5C%5C%5C%3D0.00669%5C%5C%5C%5C%5Capprox%200.0067)
Thus, the probability that, in any hour, less than 2 customers will arrive is 0.0067.