<span>Select one equation and solve it for one of its variables.
In the other equation, substitute for the variable just solved.
Solve the new equation.
<span>Substitute the value found into any equation involving both variables and solve for the other variable. </span></span>
3x +7x+x+x should be your answer
Answer:
C.) X=3 and X=-6/7
Step-by-step explanation:
Use the quadratic formula to solve
Hello :
y = 3x²+9x
= 3(x² + 3x )
= 3 ( x² +2(3/2)x +(3/2)²) -(3/2)²)
= 3((x+3/2)² -9/4)
y = 3 (x+3/2)² -27/4
<span>the x-coordinate of the vertex is : - 3/2</span>
Answer:
262144, 2 to the power of 18, or 2.62144 x 10 to the power of 5
Step-by-step explanation:
did not see a list of choices so I gave you the only other ways you could write this.
