100 POINTS The vertices of a rectangle are (3, 7), (6, 7), (6, 1), and (3, 1). Find the perimeter of the rectangle.
1 answer:
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When you know the coordinates of a point and the slope of a line, you can use the formula
in your case, and
, so you have
Answer:
90 engines must be made to minimize the unit cost.
Step-by-step explanation:
Vertex of a quadratic function:
Suppose we have a quadratic function in the following format:
It's vertex is the point
In which
Where
If a>0, the minimum value of the function will happen for
C(x)=x²-180x+20,482
This means that
How many engines must be made to minimize the unit cost?
x value of the vertex. So
90 engines must be made to minimize the unit cost.