26 Answered Questions for the topic College Pre-calculus

College pre Calculus Precalculus Math Help

11/30/17

Use an Addition or Subtraction Formula to find the exact value of the expression
A.) tan(− 11π/12) B.) cos(13°) cos(32°) − sin(13°) sin(32°)
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College pre Calculus Precalculus Homework Step By Step

11/16/17

Find the exact value of the expression.
cos(tan-1(15/8))
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College pre Calculus Math Probability Math Question

10/02/17

Forged Signaute or not Probability
A document is signed with an ElGamal signature. The probability that a signature is forged is (.1). Find the probability that at least one of the three Rob’s signatures is forged.
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College pre Calculus Calculus Precalculus Algebra

01/30/17

a person on the top of a 160-foot building throws a baseball vertically upward. The quadratic function, s(t)= -16t^2 +64t +160.
a person standing close to the edge on the top of a 160-foot building throws a baseball vertically upward. The quadratic function, s(t)= -16t^2 +64t +160, models the ball's height where s(t) is the... more
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College pre Calculus

05/03/16

X^2 + 2Y^2 + 2X - 20Y + 43=0 Find the foci and vertices
My friends and I keep getting squareroot of 8 as c but wee know that isnt right. pleace help us
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03/10/16

The voltage V across a charged capacitor is given by V(t)6e(-.26)t volts, where t is in seconds.
The voltage V across a charged capacitor is given by V(t)6e(-.26)t volts, where t is in seconds.   (a) What is the voltage V(6) after 6 seconds? Find the time t when the voltage will be 1... more
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College pre Calculus Pre Calculus

03/08/16

Find the complex number z^9. (Enter your answer in a + bi form.)
9th root of z = 4 + 4 root3 i. In a+bi form.    I am stuck!     
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03/05/16

Quadratic word problem?! PRECALCULUS PLEASE HELP!??
I have tried over and over again and I keep getting the wrong answer!The demand equation for a certain product is given by p=122−0.035x , where p is the unit price (in dollars) of the product and x... more
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College pre Calculus Precalculus Area Quadratic Word Problem

03/02/16

PRECALC HELP!!? Quadratic word problem!!Determining the width of a lawn?? I AM STUCK!
A factory is to be built on a lot measuring 300 ft by 400 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must surround the factory.What must the... more
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03/01/16

Precalc? Determining the area of a rectangle given its perimeter? PLEASE HELP!!?
The length of a rectangular garden is 8 feet longer than its width. If the garden's perimeter is 188 feet, what is the area of the garden in square feet?       I am really stuck on this and I... more
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03/01/16

Precalc question? Determining the dimensions of a rectangle given the area?? PLEASE HELP!!?
I am really stuck on this and I have not used the Pythagorean Theorem in ages. Could you please explain how you solve this as you go? Thank you for the help! I really appreciate it!   The width... more
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02/28/16

Exponential Growth Problem Involving bacteria population??! PLEASE HELP!!! - Precalculus
I am really stuck on this question, particularly questions 3 and 4. Could you please show how you get the answers to those questions and explain? I have been stuck on those for a while and would... more
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College pre Calculus

02/16/16

Verify identity
Verify the identity. Example problem from textbook.    e^sin^2(x) e^tan^2(x) = e^sec^2(x) e^−cos^2(x)
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College pre Calculus Identities

02/16/16

Verify the identity - Pre-calculus
Verify the Identity   cot2(x) − tan2(x) = csc2(x) − sec2(x)
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College pre Calculus

02/12/16

The area of a rectangle is 28 ft2 , and the length of the rectangle is 1 ft more than double the width. Find the dimensions of the rectangle
The area of a rectangle is 28 ft2 , and the length of the rectangle is 1 ft more than double the width. Find the dimensions of the rectangle
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College pre Calculus

02/12/16

Find the values of the trigonometric functions of ? from the information given.
I am so confused how to do this!    Find the values of the trigonometric functions of θ from the information given.sin(θ) = − 12/13, θ in Quadrant IV   cos(θ) = tan(θ) = csc(θ) = sec(θ) =... more
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College pre Calculus College Algebra

01/07/16

Need help with math question?
sudafed is a decongestant that comes in two strengths. regular strength contains 60 mg of medication. extra strength contains 0 09 g of medication. how much extra medication is in the... more
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College pre Calculus Pre Calculus Math Help

10/06/15

Find an equation of a rational function f that satisfies the given conditions
vertical asymptotes: x = −9, x = 3 horizontal asymptote: y = 0 x-intercept: −2; f(0) = −2 hole at x = 6
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College pre Calculus Math Precalculus Symmetry

09/05/15

Precalculus, Intercepts and Symmetry
I really need help in finding the x and y intercepts for the following graphing equation: 2x=3y^2. I know how to test for symmetry but this question confused me. Please help me!!!!!
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College pre Calculus Algebra 1 Advanced Algebra

08/23/15

all of the clerks are paid the same hourly wage. its sposed to be a system of equations.
 on monday the manager scheduled two clerks and a supervisor for 8 hour shifts. she was very pleased she met her daily budget. on tuesday the manager needed two clerks for 8 hours a third clerk... more
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College pre Calculus

07/02/15

gear with diameter of 16.0in rotates 45 revolutions every 2 minutes.
find the linear and angular velocities of a point on the outer edge of the gear. Give answer's in both exact and approximate form.
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College pre Calculus

07/02/15

A hot air balloon at an altitude of 2800 feet is 64 degrees. What is the new angle of elevation if the balloon decends veritally 1200 feet?
This is from my per-calculus course.
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College pre Calculus Precalculus Pre Calculus Pre Cal

05/18/15

y=-log(3)x+2. Find domain, x-intercept and vertical asymptote
y=-log(3)x+2. Find domain, x-intercept and vertical asymptote, I also have to sketch a graph 
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College pre Calculus

04/26/15

This is a pre-calc 2 hw problem that will be graded and I do not know how to go about this question thank you
Forces with magnitudes of 200 newtons and 900 newtons act on a machine part at angles 30° and −45°, respectively (with the positive x-axis). Find the magnitude and direction of the resultant force.
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College pre Calculus

02/04/15

it take Katherine 24 hrs, Amber 12 hrs and Jess 8 hrs to assemble it by themselves. How long would it take all three girls to assemble it if they work together?
This is from Pre-cal 126 college course. Not understanding how to work these problems Katherine, Amber and Jess want to assemble a dining table. Individually it would take Katherine 24 hrs, Amber... more
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