Answer:
Number of ovens must be manufactured in a given week to generate a profit of $1610 is 70
Step-by-step explanation:
We are given
A small-appliance manufacturer finds that the profit P (in dollars) generated by producing x microwave ovens per week is given by the formula
![P=\frac{1}{10}x(300-x)](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B1%7D%7B10%7Dx%28300-x%29)
provided that 0 ≤ x ≤ 200
We are given
profit is $1610
so, we can set P=1610
and then we can solve for x
![1610=\frac{1}{10}x(300-x)](https://tex.z-dn.net/?f=1610%3D%5Cfrac%7B1%7D%7B10%7Dx%28300-x%29)
Multiply both sides by 10
![1610\cdot \:10=\frac{1}{10}x\left(300-x\right)\cdot \:10](https://tex.z-dn.net/?f=1610%5Ccdot%20%5C%3A10%3D%5Cfrac%7B1%7D%7B10%7Dx%5Cleft%28300-x%5Cright%29%5Ccdot%20%5C%3A10)
![16100=x\left(300-x\right)](https://tex.z-dn.net/?f=16100%3Dx%5Cleft%28300-x%5Cright%29)
![16100=300x-x^2](https://tex.z-dn.net/?f=16100%3D300x-x%5E2)
![-x^2+300x-16100=0](https://tex.z-dn.net/?f=-x%5E2%2B300x-16100%3D0)
now, we can factor it
![(x-70)(x-230)=0](https://tex.z-dn.net/?f=%28x-70%29%28x-230%29%3D0)
we can solve for x
and we get
![x=70,x=230](https://tex.z-dn.net/?f=x%3D70%2Cx%3D230)
Since, x=230 does not lie on 0 ≤ x ≤ 200
So, we will consider only x=70
So,
Number of ovens must be manufactured in a given week to generate a profit of $1610 is 70
Answer:
y = 2x - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = ![\frac{y_{2}-y_{1} }{x_{2}-x_{1} }](https://tex.z-dn.net/?f=%5Cfrac%7By_%7B2%7D-y_%7B1%7D%20%20%7D%7Bx_%7B2%7D-x_%7B1%7D%20%20%7D)
with (x₁, y₁ ) = A(4, 7) and (x₂, y₂ ) = B(2,3)
m =
=
= 2 , thus
y = 2x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (2, 3), then
3 = 4 + c ⇒ c = 3 - 4 = - 1
y = 2x - 1 ← equation of line
Steps to solve:
-6w - 8 + 15w = 2w - 8 + 7w
~Combine like terms
9w - 8 = 9w - 8
~Add 8 to both sides
9w = 9w
~Divide 9 to both sides
0 = 0
All real numbers are solutions.
Set builder notation: {x | R}
Best of Luck!
Answer:
C, x + 20 = 41
Step-by-step explanation:
X represents the number of small sea shells that we originally had. When the family adds 20 more shells, that makes x + 20. The total number is 41, so that means the number of sea shells they already had (x) plus the number of sea shells they collected (20) equals the number of shells they have now (41).