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3 years ago

10

A printer needs 12,000 good copies of a flyer for a particular job. Previous experience has shown that she can expect no more th

an a 5% spoilage rate on this type of job. How many should she print to ensure 12,000 clean copies?

1 answer:

PilotLPTM [1.2K]3 years ago

8 0

Answer:

12600

Step-by-step explanation:

5% of 12000 is 600 so just add them

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Step-by-step explanation:

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An arch is in the shape of a parabola. It has a span of 100 feet and a maximum height of 25 ft.

faltersainse [42]

Answer:

$y=-\frac{1}{100}(x-50)^2+25$

the height of the arch 10 feet from the center is 24 feet

Step-by-step explanation:

An arch is in the shape of a parabola. It has a span of 100 feet, the vertex lies at the center 50 and the maximum height of 25 ft.

Vertex at (50,25)

vertex form of the equation is

$y=a(x-h)^2+k$ , (h,k) is the center

$y=a(x-50)^2+25$

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$0=a(0-50)^2+25$

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$y=-\frac{1}{100}(x-50)^2+25$

the height of the arch 10 feet from the center.

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$y=-\frac{1}{100}(40-50)^2+25$

y=24

the height of the arch 10 feet from the center is 24 feet

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