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kenny6666 [7]
3 years ago
9

A parking garage has 8 levels. Each level has parking spaces for 78 cars. How many cars can park in the garage at one time?

Mathematics
1 answer:
mafiozo [28]3 years ago
5 0
624 cars can park in the garage at one time.

this is because 78 x 8 = 624
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Find the vertex of the parabola.<br> F(x) = 5x^2 - 30x +49
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X=-b/2a is the formula for finding the axis of symmetry
So x= -30/2(5)
X=-30/10
X=-3

Because the axis of symmetry is -3, we know where to place our line, and we also know that the parabola is open downwards, which means that the vertex will be maximum. To find the vertex, plug in your values with the axis of symmetry as a midway point. Plug that in for x and so you should have the following:
F(x)
Y(f(x) and y variables are interchangeable) =5(-3)^2-30(-3)+49

Solve for y(f(x))
5(-3)^2-30(-3)+49
(-3)^2=3^2
3^2*5+30*3+49
Multiply
3^2*5+90+49
Add numbers
3^2*5+139
9*5=45
45+139=184
Y=184

So, your vertex would be
(-3,184) and it would be maximum. From there you can plug in the rest of your table of values.
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