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
N
|||
C
|
H----- C -----H
|
H
This is how the <span>skeleton of acetonitrile looks like with its bonds and nonbonding electrons.
</span>
Acetonitrile is a chemical compound that is a byproduct of acrylonitrile manufacture. Its molecular formula is CH₃CN or C₂H₃N. It is said to be the simplest organic nitrile and it is a colorless liquid.
Answer:
Step-by-step explanation:
-1/2
Answer:
x=4
Step-by-step explanation:
(x-2)(x+1)=3x-2
x(x+1)-2(x+1)=3x-2
x^2+x-2x-2=3x-2
x^2-x-2=3x-2
x^2=3x+x-2+2
x^2=4x
x^2/x=4
x=4
Answer:
A is the y-axis
C is the origin
D is the x-axis
Step-by-step explanation:
I do not know what B is sorry