1,063 Answered Questions for the topic Pre-Calculus

12/14/19

precalc question
A cancerous cell lacks normal biological growth regulation and can divide continuously. Suppose a single mouse skin cell is cancerous and its mitotic cell cycle (the time for the cell to divide... more
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12/13/19

precalc question
The cities of Abnarca and Bonipto have populations that are growing exponentially. In 1980, Abnarca had a population of 25,000 people. In 1990, its population was 29,000. Bonipto had a population... more
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Pre Calculus Math Precalculus Maths

12/12/19

Precalc question
In 1987, the population of Mexico was estimated at 82 million people, with an annual growth rate of 2.5%. The 1987 population of the United States was estimated at 244 million with an annual growth... more
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Pre Calculus Math Precalculus Maths

12/12/19

precalc question
A ship embarked on a long voyage. At the start of the voyage, there were 500 ants in the cargo hold of the ship. One week into the voyage, there were 800 ants. Suppose the population of ants is an... more
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Pre Calculus Math Precalculus Maths

12/12/19

Precalc question
Your Grandfather purchased a house for $55,000 in 1952 and it has increased in value according to a function y = v(x), where x is the number of years owned. These questions probe the future value... more
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Pre Calculus Math Precalculus Maths

12/12/19

Precalc question
As light from the surface penetrates water, its intensity is diminished. In the clear waters of the Caribbean, the intensity is decreased by 15 percent for every 3 meters of depth. Thus, the... more
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Pre Calculus Math Precalculus Maths

12/12/19

Precalc question
A ship embarked on a long voyage. At the start of the voyage, there were 500 ants in the cargo hold of the ship. One week into the voyage, there were 800 ants. Suppose the population of ants is an... more
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Expert Answers •1
Pre Calculus Math Precalculus Maths

12/12/19

Precalc question
In 1987, the population of Mexico was estimated at 82 million people, with an annual growth rate of 2.5%. The 1987 population of the United States was estimated at 244 million with an annual growth... more
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Pre Calculus

12/04/19

I’m not sure how to solve this

How long (in years and months) will it take for an investment to double 13% compounded monthly?
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Pre Calculus Trigonometry

12/04/19

Pre calculus. i have a test 2marrow and have a question. If you have the sec how can u find sin.

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Pre Calculus Math Precalculus Maths

11/28/19

Precalc Question
A biochemical experiment involves combining together two protein extracts. Suppose a function φ(t) monitors the amount (nanograms) of extract A remaining at time t (nanoseconds). Assume you know... more
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Pre Calculus Math Precalculus Maths

11/28/19

Precalc question (googling this question can give you diagram)
A trough has a semicircular cross section with a radius of 5 feet. Water starts flowing into the trough in such a way that the depth of the water is increasing at a rate of 2 inches per hour.Give a... more
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Pre Calculus Math

11/27/19

Revenue is the amount of money a business has coming in. It can be calculated by the number of items sold multiplies to the amount paid for each item.
A concert venue has determined that they usually sell 700 tickets for a concert when the price is at $25.00 per ticket. They notice that each time the price drops by $1.00, they usually sell an... more
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Pre Calculus Precalculus Pre Calculus

11/25/19

Precalculus Vector problem
An airplane is heading due north at 260 mph (air speed). a 16 mph window blows from the northwest at an angle of 110 degrees clockwise from the north.Find the true speed (ground speed ) and... more
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Pre Calculus Math Precalculus Maths

11/24/19

Precalc question
For this problem, y = f(x) = 2x^2 − 3x − 1 on the domain of all real numbers.Explain why y = f(x) does not have an inverse function on the domain of all real numbers.
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Pre Calculus

11/23/19

Logs and Exponents

Solve.(log base 3 of x)^2 - log base 3 of x^2=15
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11/22/19

Plot the Polar Coordinates
Plot the Points with polar coordinates (-6,-π/6) and (2, 3π/2). Plot on the Unit Circle.Small320×320Please help! I'm just not understanding this. Please explain! Thank you!
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Pre Calculus

11/21/19

I need help on this math question
Nancy wants to invest $2000 in saving certificates that bear an interest rate of 8.75% per year, compounded semiannually. How long a time period should she choose to save an amount to save an... more
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11/21/19

Use the information given below to find cos (α-β)
Use the information given below to find cos (α-β)tan(α) = 3/4, with α in quadrant I sin(β) = 3/5, with β in quadrant IIGive the exact answer, not a decimal approximation.please help and explain how... more
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Pre Calculus Precalculus

11/21/19

Please help me answer this ASAP?
Luisa organized a charity walk. In the first year, the walk generated $3000. She hopes toincrease this amount by $900 each year for the next several years. If her goal is met, whatis the total... more
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Pre Calculus Math Calculus Precalculus

11/21/19

(Calculus) A fence 3 feet tall runs parallel to a tall building at a distance of 4 feet from the building...
A fence 3 feet tall runs parallel to a tall building at a distance of 4 feet from the building. We want to find the the length of the shortest ladder that will reach from the ground over the fence... more
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Pre Calculus Math Calculus Precalculus

11/21/19

The Nearsighted Cow Problem
A rectangular billboard 9 feet in height stands in a field so that its bottom is 12 feet above the ground. A nearsighted cow with eye level at 4 feet above the ground stands x ft from the... more
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Pre Calculus Math Precalculus Maths

11/19/19

Precalc Question
Rocky is a horse and he is searching his master on his ranch. His master is not moving, just sitting on a rock and whistling. The whistle can be heard from up to 1 mile away. Initially, Rocky is at... more
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Pre Calculus Math Precalculus Maths

11/19/19

Precalculus Question
For the following function, y = f(x), simplify the following expression so that h is no longer a factor in the denominator, then calculate the result of setting h = 0 in this simplified expression:... more
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Pre Calculus

11/19/19

Graphing a line y=1
How to graph the equation which is y=1?
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