3 years ago

Tasha is buying a cd that is regularly $12.99 and is on sale for 1/4 off.

Mathematics

1 answer:

tatiyna3 years ago

5 0

9.74$

IS the final answer

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Claire McCullough got her water and sewer bill from Dynamo Water & Wastewater Company which showed the following uses of wat

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3 years ago

If a dealer purchased a stove for 558.54, after a 46% trade discount, what is the dealers cost?

Hitman42 [59]

The stove after discount now cost 301.61 dollars.

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3 years ago

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Hello, I am currently very stuck with this problem and I am unsure as to how I would solve it.

borishaifa [10]

We have the equation

$20y=x^2-10-15$

Let's complete the square, to do it let's add and subtract 25 on the right side

$\begin{gathered} 20y=x^2-10-15+25-25 \\ \\ 20y=(x-5)^2-15-25_{} \\ \\ 20y=(x-5)^2-40 \\ \\ \end{gathered}$

Now we can have y in function of x

$\begin{gathered} y=\frac{1}{20}(x-5)^2-2 \\ \\ \end{gathered}$

Now we can already identify the vertex because it's in the vertex form:

$y=a(x-h)+k$

Where the vertex is

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As we can see, h = 5 and k = -2, then the vertex is

$(5,-2)$

Now we can continue and find the focus, the focus is

$\mleft(h,k+\frac{1}{4a}\mright)$

We have a = 1/20, therefore

$\begin{gathered} \mleft(5,-2+5\mright) \\ \\ (5,3) \end{gathered}$

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And the last one, the directrix, it's

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Then

$\begin{gathered} y=-2-5 \\ \\ y=-7 \end{gathered}$

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1 year ago

Aileen can read 1.5 pages for every page her friend can read. Aileen's mom was very excited and she said to Aileen: "So, if your

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No she is not because:

Friend 1(page)x20(pages)=20(pages)
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30 $\neq$ 25(aileen's moms answer.)

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3 years ago

a cell phone carrier charges flat fee 40 dollars total cost talking 20 minutes 41 dollars what is the rate of change of the cost

Nikitich [7]

2 dollars per minute? The question isn't really very clear...

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4 years ago

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