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Alex787 [66]
3 years ago
9

A store bought a chalkboard and marked it up 200% from the original cost of $72. Later on, Jackie purchased the chalkboard and p

aid 9.25% sales tax. How much, including tax, did she pay for the chalkboard?
Mathematics
1 answer:
avanturin [10]3 years ago
8 0
Precio antes de impuestos: $ 144.00
Impuesto de venta: 9.25% o $ 13.32
Precio después de impuestos: $ 157.32

Espero que te sirva !
Bendiciones.
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The red dot is about half way between 12 and 13
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Answer:

It is given that red dot is about halfway between 12 and 13.

Draw a number line.Mark points on it on  as 1,2,3,.....12,13,...20.

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We know that
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the equation of a horizontal parabola in vertex form
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(h,k)------> (0,5)
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x=a*(y-5)²
substitute the point (2,9) in the equation
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the equation of the horizontal parabola is
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the answer is
the equation of the vertical parabola is y=x²+5
the equation of the horizontal parabola is x=(1/8)*(y-5)²

see the attached figure

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