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3 years ago

In 36 days a girl spent 18 dollars. On average, what did she spend daily

Mathematics

2 answers:

Lapatulllka [165]3 years ago

5 0

18/36 = 0.50 cents per day

timama [110]3 years ago

4 0

If we're doing this: $\frac{18}{30}$ then your answer would most likely be: $.50(cents)$ but if we're doing this method $\frac{30}{18}$ then your answer would probably be $2$

$Good \\ Luck \\ on \\ your \\ assignment!$

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

ICE Princess25 [194]

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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