Answer:
Equation :
Gallons needed = gallons
Step-by-step explanation:
It is given that:
Gallons of paint used by Tyler =
Area of fence painted = 5/7
Let,
x be the whole fence needed to paint.
Because we know that 5/7 of the fence is painted with 5/4 gallons of paint.
Multiplying the equation with 7/5
Therefore,
Equation :
Gallons needed = gallons
Answer:
y = (x + 9)² + 9
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
given a parabola in standard form : ax² + bx + c : a ≠ 0
the the x-coordinate of the vertex is
= -
y = x² + 18x + 90 is in standard form
with a = 1, b= 18 and c = 90
= -
= - 9
to find the corresponding y-coordinate substitute x = - 9 into the equation
y = (- 9)² + 18(- 9) + 90 = 81 - 162 + 90 = 9
⇒ y = (x + 9)² + 9 ← in vertex form
Answer:
y < 106
Step-by-step explanation:
Step 1: Add 21 to both sides.
Therefore, the solution is y < 106.
To graph it on a graph: