Subtract three from either side. That will give you 4r=-21. Divide -21 by 4 and r will equal -5.25.
Answer:
3/8
Step-by-step explanation:
Hello from MrBillDoesMath!
Answer:
(x+2) ( x^2 + 3)
Discussion:
x^3 + 2x^2 + 3x + 6 =
(
x^3 + 2x^2) + (3x + 6) = => factor "x^2" from the first term; factor 3
from the second term
x^2( x + 2) + 3( x+2) = => factor (x+2) from each term
(x+2) ( x^2 + 3)
Thank you,
MrB
Answer:
a) Infinite solutions
b) No solutions
Step-by-step explanation:
First, know the following:
If the graphs intersect, there's only one solution.
If the graphs are parallel, there are no solutions.
If the graphs are the exact same line, there are infinite solutions.
For a):
Change the first equation into a linear one.
Change the second equation into a linear one.
- 4x+6y=12
- 6y=-4x+12
![y=-\frac{2}{3} x+2](https://tex.z-dn.net/?f=y%3D-%5Cfrac%7B2%7D%7B3%7D%20x%2B2)
Boom. You have two equations which are equal. As stated above, graphs on the exact same line have infinite solutions.
For b)
They are already in linear form so hurray.
![y=\frac{1}{5} x+2\\y=\frac{1}{5} x+10\\](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B1%7D%7B5%7D%20x%2B2%5C%5Cy%3D%5Cfrac%7B1%7D%7B5%7D%20x%2B10%5C%5C)
These lines are parallel since they have the SAME slope but a different y-intercept. As stated above, parallel lines have no solutions.
Answer:
C. $5500
Step-by-step explanation:
Find the point on the horizontal scale where Time is 7. Follow that line up to the red "line of best fit". Then follow that horizontally to see where it falls on the Resale Value scale. It is between 5 and 6 (thousands of dollars) on that scale.
The only answer choice that is between $5000 and $6000 is ...
C. $5500