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Sergeu [11.5K]
3 years ago
10

Which statement is true about the extreme value of the given quadratic equation?

Mathematics
1 answer:
ICE Princess25 [194]3 years ago
3 0

Answer:

Option B.  The equation has a maximum value with a y-coordinate of -21.

Step-by-step explanation:

The correct quadratic equation is

y=-3x^{2}+12x-33

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

Convert to vertex form

Factor -3

y=-3(x^{2}-4x)-33

Complete the square

y=-3(x^{2}-4x+2^2)-33+12

y=-3(x^{2}-4x+4)-21

Rewrite as perfect squares

y=-3(x-2)^{2}-21

The vertex is the point (2,-21)

therefore

The equation has a maximum value with a y-coordinate of -21

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Lunna [17]

Answer:

600

Step-by-step explanation:

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x is what we need to find

6,000 is the total people who voted

10% is the percent of 18 to 29 years old

and 100% represents the circle graph because all circle graphs equal 100%

First, we use the cross multiply method, for instance, 6,000×10=60,000

Next, divide 60,000÷100 which is 600.

Therefore there are 600, 18 to 29 year olds who voted in the election.

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3 years ago
Find the surface area
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3 years ago
-5(3x-4)+4=114 answer
Aleks04 [339]

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x = 90 : (-15)

x = -6

6 0
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Which equation has no solution?
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Answer:

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Step-by-step explanation:

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