Answer:
At price 3 and 11, the profit will be $0
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one.
<em>
A certain companies main source of income is a mobile app. The companies annual profit (in millions of dollars) as a function of the app’s price (in dollars) is modeled by P(x)=-2(x-3)(x-11) which app prices will result in $0 annual profit?</em>
My answer:
Given:
- x is the app price
- P(x) is the profit earned
If we want to find out the app price that will result in $0 annual profit? It means we need to set the function:
P(x)=-2(x-3)(x-11) = 0
<=> (x-3)(x-11)= 0
<=> x - 3 = 0 or x - 11=0
<=> x = 3 or x = 11
So at price 3 and 11, the profit will be $0
Hope it will find you well.
Answer:
C. The greatest common factor was not factored out correctly from second group
Step-by-step explanation:
The following lines show the process of factorization by using common factor.
<u>Line 1:</u>
In line 1, the equation is given and is grouped from which common factors can be taken. This is completely fine.
![(3x^{2}+xy^{2}) +(-3xy-y^{3} )=0](https://tex.z-dn.net/?f=%283x%5E%7B2%7D%2Bxy%5E%7B2%7D%29%20%2B%28-3xy-y%5E%7B3%7D%20%29%3D0)
The only thing missing was equate to zero, but the options below talk about correct factors only, therefore this can't be considered as a mistake and can be ignored completely.
<u>Line 2:</u>
In line 2, the common terms are taken out from groups. The common term x is taken from group 1 which is fine. In second group the common term -y is taken out, which is fine but it was not factored out correctly. The correct factorization would have been:
![x(3x+y^{2}) -y(3x +y^{2} )=0](https://tex.z-dn.net/?f=x%283x%2By%5E%7B2%7D%29%20-y%283x%20%2By%5E%7B2%7D%20%29%3D0)
which is different from what is given in line 2.
Options:
A. The grouping is correct in line 1. So this option is does not hold.
B. Common factor was factored correctly from group 1. So this option does not hold.
C. Common factor was not factored correctly from group 2. So this option holds and is correct. Thus we choose this option as correct answer.
D. There is a mistake. So this option is also not correct.
Answer:
21 + 4 = 25
Step-by-step explanation:
this is the answer because the temperature fell 4 degrees in the last hour.
so we have to add back that 4 to get the answer.
our equation will be 21 + 4 equals 25.
hope this helps!
sakuracherry
Answer:
im here
Step-by-step explanation: