Answer:
x=9 and y=3
Step-by-step explanation:
Let's solve your system by substitution.
−4x+6y=−18 and y=−2x+21
Rewrite equations:
y=−2x+21;−4x+6y=−18
Step: Solve y=−2x+21for y:
y=−2x+21
Step: Substitute−2x+21foryin−4x+6y=−18:
−4x+6y=−18
−4x+6(−2x+21)=−18
−16x+126=−18(Simplify both sides of the equation)
−16x+126+−126=−18+−126(Add -126 to both sides)
−16x=−144
−16x
−16
=
−144
−16
(Divide both sides by -16)
x=9
Step: Substitute9forxiny=−2x+21:
y=−2x+21
y=(−2)(9)+21
y=3(Simplify both sides of the equation)
Answer:
x=9 and y=3
Answer:
The answer is $317.4$.
Step-by-step explanation:
Brainliest plz
Answer:
14
Step-by-step explanation:
5 time 8=40
40 = total
6 times 9=54
54-40=14
I hope this will help
Answer:
Points on the inverse are ![(1,-1), (4,2), \text{and } (0,0)](https://tex.z-dn.net/?f=%281%2C-1%29%2C%20%284%2C2%29%2C%20%5Ctext%7Band%20%7D%20%280%2C0%29)
Step-by-step explanation:
When writing the inverse function of a set of points, you simply switch the coordinates:
![\text{Function}: (x,y)\\\text{Inverse}: (y,x)](https://tex.z-dn.net/?f=%5Ctext%7BFunction%7D%3A%20%28x%2Cy%29%5C%5C%5Ctext%7BInverse%7D%3A%20%28y%2Cx%29)
We are given the points
![(-3,9), (-1,1), (0,0), \text{and } (2,4)](https://tex.z-dn.net/?f=%28-3%2C9%29%2C%20%28-1%2C1%29%2C%20%280%2C0%29%2C%20%5Ctext%7Band%20%7D%20%282%2C4%29)
Using our rule for function, our new points will be
![(9,-3), (1,-1), (0,0), \text{and } (4,2)](https://tex.z-dn.net/?f=%289%2C-3%29%2C%20%281%2C-1%29%2C%20%280%2C0%29%2C%20%5Ctext%7Band%20%7D%20%284%2C2%29)
From the list, the points we have for the graph of the inverse are
![(1,-1), (4,2), \text{and } (0,0).](https://tex.z-dn.net/?f=%281%2C-1%29%2C%20%284%2C2%29%2C%20%5Ctext%7Band%20%7D%20%280%2C0%29.)
It would be 1/4 because there are 12 inches on a ruler. And if it lands between 3 and 5 there are 3 chances out of 12 that it will land between 3 and 5. 3/12 simplifies to 1/4