10 Answered Questions for the topic Precalculus Word Problem

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

#### Precalculus word problem

An arch going into an alley is in the shape of a downward opening parabola. The base of the arch is 10 ft. wide, and the arch is 15 ft. high at its center. How wide is the arch 10 ft. up?

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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10/30/19

#### Finding exponential decay given half-life problem

The half-life of a certain radioactive substance is 10 years. Initially there are 100 grams of the substance. Let A(t) be the number of grams of the substance at time t years. Find each of the...
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10/30/19

#### Continuous compound problem

How long will it take for an investment of $1000.00 to grow to $6000.00 at an interest rate of 3% if interest is compounded a) 3 times per yearb) Continuously

10/09/19

#### Precalculus word problem

Suppose the average number of vehicles arriving at the main gate of an amusement park is equal to 10 per min, while the average number of vehicles admitted through the gate per minute is equal to...
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10/09/19

#### Precalculus word problem

A rectangular piece of cardboard measuring 12 inches by 18 inches is to be made into a box w/ an open top by cutting equal-sized squares from each corner and folding up the sides. Let x represent...
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Precalculus Word Problem

11/18/15

#### I need to develope a formula and show how to come to that conclusion Please READ

Consider the graphs of equations of the quadratic form y=ax2+bx+c that have two x-intercepts. Let d denote the shortest distance from the axis of the parabola to either of the x-intercepts, and...
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