Answer:
y = - 2(x + 4)² + 6
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Here (h, k ) = (- 4, 6 ) , thus
y = a(x - (- 4) )² + 6 , that is
y = a(x + 4)² + 6
To find a substitute (- 2, - 2) into the equation
- 2 = a(- 2 + 4)² + 6 ( subtract 6 from both sides )
- 8 = a(2)² = 4a ( divide both sides by 4 )
- 2 = a , thus
y = - 2(x + 4)² + 6 ← equation in vertex form
Answer:
41
Step-by-step explanation:
Divide 2818 by 70 and it comes out to: 40.2571429 it is not 40 because their is still some left over so there will be 41 ferry's and one of them will not be a full ride!
Answer: $292.30
Step-by-step explanation:
Look at mâthwáy it will help a lot !!! i promise !
Move all to one side, make other side zero, and I like x^2 term to be positive
5-11x^2=-8x
add -5+11x^2 to both sides
0=11x^2-8x-5
4+3x=-x^2+2
add x^2-2 to both sides
x^2+3x+4+2=0
x^2+3x+6=0
x(x+2)=-5
add 5 to both sides
x(x+2)+5=0
x^2+2x+5=0
(2x-1)^2=1
expand
(2x-1)(2x-1)=1
4x^2-2x-2x+1=1
minus 1 from both sides
4x^2-4x=0
