829 Answered Questions for the topic Pre-Calculus

3d

#### Find the exact values of the other 5 trig functions if cos θ = -1/3, pi/2 < θ < pi

Find the exact values of the other 5 trig functions if cos θ = -1/3, pi/2 < θ < pi

Pre Calculus Precalculus

7d

#### MATH HELP PLZ!!!

A sparkling-water distributor wants to make up 200 gal of sparkling water to sell for $5.00 per gallon. She wishes to mix three grades of water selling for $8.00, $3.00, and $4.50 per gallon,...
more

Pre Calculus Precalculus

7d

#### MATH HELP PLZ!!!

A rug cleaning company sells three models. EZ model weighs 10 pounds, packed in a 10-cubic-foot box. Mini model weighs 20 pounds, packed in an 8-cubic-foot box. Hefty model weighs 60 pounds,...
more

Pre Calculus Precalculus

8d

#### The following augmented matrix is in row-echelon form and represents a linear system. Solve the system by using back-substitution, if possible.

[1 2| 5][0 1| -1]

Pre Calculus Pre Calculus

16d

#### Find f ∘ g and g ∘ f. f(x) = x3, g(x) = x2/3

(a) f∘ g =(b) g ∘ f=Find the domain of each function and each composite function. (Enter your answers using interval notation.)domain of f =domain of g =domain of f ∘ g =domain of g ∘ f =

Pre Calculus Algebra

20d

#### Find the equation of a tangent line to the given curve at an x-coordinate.

I need to find the slope-intercept form of the tangent line that is formed when the curve of the equation y=x^3-2x-2 intersects with x=1

23d

#### If f(x)=3x^2+4x+5, what must the value of k equal so that the graph of f(x-k) will be symmetric to the y-axis?

Choices:(a) -4(b) -4/3(c) -2/3(d) 2/3(e) 4/3

25d

#### Help me plz!!!!

The half-life of a radioactive substance is 31.7 years.(a) Find the exponential decay model for this substance(b) How long will it take a sample of 400 grams to decay to 300 grams?(c) How much of...
more

25d

#### Plz help!!!!!!!

The amount of carbon 14 present in a paint after t years is given by A(t)=A0 e-0.00012t. The paint contains 32% of its carbon 14. Estimate the age of the paint. Round to the nearest year as needed.

25d

#### Help plz!!!!!!!

The amount of carbon-14 present in animal bones after t years is given by A(t)=A0e-0.00012t. A sample of fossil had 26% of the carbon 14 of a contemporary living sample. Estimate the age of the...
more

30d

#### I need help with integrals

Let f be the function given by f(x)=sin^2(x/4)e^(−x2). It is known that (top value= π/2)∫(bottom value=0) f(x) dx= 0.0223. If a midpoint Riemann sum with two intervals of equal length is used to...
more

Pre Calculus

01/17/21

#### Rewrite with only sin x and cos x. cos x - sin 2x

These are the choices2 sin x cos2x + cos x2 sin x cos2x + sin3xsin x cos2x - sin3x + cos3xcos x - 2sin xcos x

01/13/21

#### Is it possible to have a rational function with the following characteristics?

horizontal asymptote at y=1/3vertical asymptote at x=-4/3x intercept= (-1,0)y intercept= (0,3/4)hole at (1/2,3/11)

Pre Calculus

01/13/21

#### How do you do this pre-calculus question?

Find two function f and g such that f(g(x))=5/(x^2 −1)^3.

01/11/21

#### Write the standard form equation of the hyperbola given the following vertices and perimeter of central rectangle

Vertices (0,-1), (-20, -1)Perimeter of Central Rectangle = 72

01/09/21

#### Sketch the graph of the function. (Include two full periods.) Use a graphing utility to verify your result.

y = 1/9 cot(x + 𝜋)A. B. C. D.

01/09/21

#### Use a graph of the function to approximate the solutions of the equation on the interval [−2𝜋, 2𝜋]. (Enter your answers as a comma-separated list. Round your answers to three decimal places.)

sec (x) = -2x =

12/20/20

#### Use the graph of the function to answer the following.

f(x) = cos(x) on the interval [−2𝜋, 2𝜋](a) Find the x-intercepts of the graph of y = f(x). (Enter your answers as a comma-separated list.)x =(b) Find the y-intercepts of the graph...
more

Pre Calculus Precalculus

12/15/20

#### Pre-Calc Ferris Wheel Modelling Problem

The Ferris wheel in the following diagram has a radius of 30 feet, and it’s center is 40 feet from the ground, and it makes one revolution every 40 seconds. 1. Write the equation of the height of...
more

12/15/20

#### Calculus Challenge Question URGENT!

I need to catch my flight. I’m at the airport and I’m running late. I need to make it 1000m to get to my gate. I have two choices. I can either run or take the moving sidewalk. The moving sidewalk...
more

12/14/20

#### Trig Equations and Identity

The angle of elevation to the top of a Building in New York is found to be 4 degrees from the ground at a distance of 2 miles from the base of the building. Using this information, find the height...
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.