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serious [3.7K]
2 years ago
13

The school store sells packs of 12 pens for $2.40. Which is NOT a unit rate to describe this sale?

Mathematics
2 answers:
padilas [110]2 years ago
7 0
The answer is D.

120 divided by 24 would not give you the price of ONE pen
lys-0071 [83]2 years ago
6 0
<span> Which is NOT a unit rate to describe this sale?

answer is
</span><span>D. 120 pens per 24 dollars</span>
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Factor the quadratic expression in the equation y=2x^2+28x+96 and use the factors to find the zeros of the equation. Then, use t
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Answer:

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Step-by-step explanation:

We have been given an equation y=2x^2+28x+96. We are asked to find the zeros of equation by factoring and then find the line of symmetry of the parabola.

Let us factor our given equation as:

2x^2+28x+96=0

Dividing both sides by 2:

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Splitting the middle term:

x^2+6x+8x+48=0

(x^2+6x)+(8x+48)=0

x(x+6)+8(x+6)=0

(x+8)(x+6)=0

Using zero product property:

(x+8)=0\text{ (or) }(x+6)=0

x+8=0\text{ (or) }x+6=0

x=-8\text{ (or) }x=-6

Therefore, the zeros of the given equation are x=-8\text{ (or) }x=-6.

We know that the line of symmetry of a parabola is equal to the x-coordinate of vertex of parabola.

We also know that x-coordinate of vertex of parabola is equal to the average of zeros. So x-coordinate of vertex of parabola would be:

\frac{-8+(-6)}{2}=\frac{-14}{2}=-7

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

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