Sandy is working with a carpenter to frame a house. They are using 8-foot-long boards, but each board must be cut to be 94.6 inc
2 answers:
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Answer:
The area that was not painted is
Step-by-step explanation:
step 1
Find the area of the rectangle
we know that
The area of a rectangle is equal to
In this problem we have
substitute
step 2
Find the area that was painted
step 3
Find the area that was not painted
Subtract the area that was painted from the total area of rectangle
so
if we zero out f(x), namely make y = 0, we can get the roots or x-intercepts for this quadratic equation
now, the equation is in x-terms, meaning is a vertically opening parabola, so the axis of symmetry will be x = something, a vertical line.
well, we have two x-intercepts, one at -4 and another at 2, and the vertex is right half-way between those guys
-4------------(-1)------------2
so the vertex is at x=-1, namely the axis of symmetry is x = -1.