3x - y - 3z
(3*-2) - 1 - (3*-2)
-6 - 1 - (-6)
-7 + 6
-1
Answer:
![\frac{-9}{12}](https://tex.z-dn.net/?f=%5Cfrac%7B-9%7D%7B12%7D)
Step-by-step explanation:
First, we need to isolate y.
1. Subtract 12x from both sides.
-9y=-12x+135
2. Divide by -9 in order to isolate y.
![y=\frac{12}{9} x-15](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B12%7D%7B9%7D%20x-15)
3. Understand that perpendicular equations' slopes are opposite and reciprocal to the original equation. The slope of the original equation is
, so the reciprocal and opposite (flip and change the sign) slope would be
.
You want to find the ratio of BC to AB. You know that the length of BC is 16 and AB is 20. So, it is 16:20. However, you want to find the simplest form so find the greatest common factor of 16 and 20 which is 4. Divide both by 4 to get 4:5.
Answer:
A. (x-3)(x+4)(x-6)
Step-by-step explanation:
We need to find the polynomial f(x)=x^3 - 5x^2 - 18x + 72 as a product of lineal factors.
We're going to solve the problem using Ruffini's rule:
1 -5 -18 72
3 3 -6 -72
______________________________
1 -2 -24 0
Then we have:
1 -2 -24
-4 -4 24
______________________________
1 -6 0
Lastly:
1 -6
6 6
______________________________
1 0
Then, the roots are: x=6, x=-4 and x=3
For that reason, the product of linear factors is:
(x-6)(x+4)(x-3) which is option A.
Answer:
39.85
Step-by-step explanation:
okay i put what i did to solve the question...