7 Answered Questions for the topic Precalculus Help

12/09/19

#### Word problem help

A pot of coffee with a temperature of 100 degrees Celsius is set down in a room with a temperature of 20 degrees Celsius. The coffee cools to 50 degrees celsius in one hour.a. Find T(t), the...
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12/09/19

#### Word problem help!

A rectangular box without a top has a square base and a volume of 24 cubic inches. Let x be the length of the sides of the base. Write the surface area of the box as a function of the single...
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12/09/19

#### Precalculus word problem help

A certain right triangle has area 65 square inches. One leg of the triangle measures one inch less than the hypotenuse. Let x represent the length of the hypotenuse. Write the legs of the triangle...
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12/09/19

#### Find an equation of the ellipse

Find an equation of the ellipse that has vertices (4, 2) & (-2, 2) and foci (3, 2) and (-1, 2)

12/02/19

#### Precalculus Word Problem - 3 by 3 or 2 by 3 function

A total of $5000 is invested at 2%, 3% and 4%. The amount invested at 4% equals the total amount invested at 2% and 3%. The total interest for one years is $145. If possible, find the amount...
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10/09/19

#### Given some zeros of a polynomial function find all zeros of the function

P(x) = 2x^4 - x^3 - 27x^2 + 16x - 80, with zeros: 4, -4

Precalculus Help

04/27/14

#### find the length s of the arc of a circle of a radius 48 meters subtended by the central angle 1/6 radian

I just have no idea how to solve this problem

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