2,195 Answered Questions for the topic Pre Calculus

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

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.
Pre Calculus Math Precalculus

11/22/19

A survey team is trying....

) A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 24degrees .... more
Pre Calculus Math Precalculus

11/22/19

Recall the definition: Let θ be an angle in standard position. Its reference angle is the acute angle θ′ formed by the terminal side of θ and the horizontal axis.

Below, express  in the same units (degrees or radians) as theta. You can enter arithmetic expressions like 210-180 or 3.5-pi.  The reference angle of 100 deg is _____ the reference angle of 350... more
Pre Calculus Math Precalculus

11/22/19

If the terminal point determined by t is (3/5,-4/5), then

sin(t)= cos(t)= tan(t)=
Pre Calculus Math Precalculus

11/22/19

Evaluate the following expressions. The answer must be given as a fraction, NO DECIMALS. If the answer involves a square root It should be entered as sqrt.

If sin theta = 3/5 and theta is in quadrant II, then.... cos theta= tan theta = cot theta = sec theta = csc theta=
Pre Calculus

11/22/19

revenue of r as a function

find a model that expresses the revenue r as a function of x (remember R=xp) p=-1/7x +200
Pre Calculus Math Calculus Mathematics

11/21/19

Rolle's Theorem

Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers c that satisfy the conclusion of Rolle's Theorem. (Enter your answers as a... more
Pre Calculus Precalculus

11/20/19

A rectangular lot whose perimeter is 360 feet is fenced along three sides. An expensive fencing along the lot's length costs $25 per foot

, and an inexpensive fencing along the two side widths costs only $6 per foot. The total cost of the fencing along the three sides comes to $3590. What are the lot's dimensions?

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

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

11/17/19

Precalc question

A car leaves Seattle heading east. The speed of the car in mph after m minutes is given by the function C(m) = 70m^2 / (10 + m^2) .(a) Find a function m = f(s) that converts seconds s into minutes... more

11/15/19

Precalc question

A car leaves Seattle heading east. The speed of the car in mph after m minutes is given by the function C(m) = 70m2 10 + m2 .(a) Find a function m = f(s) that converts seconds s into minutes m.... more

11/15/19

Precalc question

(a) Let f(x) be a linear function, f(x) = ax + b for constants a and b. Show that f(f(x)) is a linear function.(b) Find a function g(x) such that g(g(x)) = 6x − 8.

11/15/19

Precalc Question

Let f(x) = 1 2 x + 3.Give a quadratic function whose fixed points are x = −2 and x = 3.

11/15/19

Precalc Question

Let y = f(z) = √ 4 − z 2 and z = g(x) = 2x + 3. Compute the composition y = f(g(x)). Find the largest possible domain of x-values so that the composition y = f(g(x)) is defined.

11/14/19

Precalc Question

Suppose you have a function y = f(x) such that the domain of f(x) is 1 ≤ x ≤ 6 and the range of f(x) is −3 ≤ y ≤ 5.(a) What is the domain of f(2(x − 3)) ?(b) What is the range of f(2(x − 3)) ?(c)... more

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.