2,218 Answered Questions for the topic Pre Calculus

Pre Calculus Algebra College Algebra

03/17/16

The price of a small diamond ring was recently increased by 11%. If the ring originally cost $1900, find the mark up and the new price of the ring.
The price of a small diamond ring was recently increased by 11%. If the ring originally cost $1900, find the mark up and the new price of the ring.
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Pre Calculus

03/07/16

If two goal posts are 12 meters apart. The ball is 25.8 meters from on post and 22.5 meters from the other post. Draw a diagram and use cosine law to solve.
This is a grade eleven Pre calculus question    
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Pre Calculus

03/04/16

3 problem quastion
Country Day's scholarship fund receives a gift of $ 140000. The moneyis invested in stocks, bonds, and CDs. CDs pay 2 % interest, bondspay 3.7 % interest, and stocks pay 11.1 % interest. Country... more
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Pre Calculus

03/02/16

the wrapping function
what is the wrapping function of 7pi/6
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Pre Calculus

02/27/16

Let f(x)=16-x and g(x)=4-x. Find f/g(x)
Multiplying functions
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Pre Calculus

02/24/16

Find the exact values
Find the exact value of the trig function given that sin u = 4/5 and cos v = -7/25  Both angles are in quadrant 2  Tan(u-v)
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Pre Calculus

02/24/16

Write the expression as sline, cosine, or tangent of the angle
Write the expression as sline, cosine, or tangent of the angle sin 130cos50+cos130sin50
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Pre Calculus

02/24/16

Identities
verify the identity sec^2x cot x - cot x =tan x
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Pre Calculus

02/24/16

Use the power reducing formula to rewrite in terms of the first power of cosine
Use the power reducing formula to rewrite in terms of the first power of cosine cos^4 2x
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Pre Calculus

02/21/16

How much of a 60% acid solution must be mixed with 50 gallons of a 24% acid solution to obtain a solution that is 50% acid?
How much of a 60% acid solution must be mixed with 50 gallons of a 24% acid solution to obtain a solution that is 50% acid?
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Pre Calculus

02/08/16

How to find vertex, focus, directix and axis of symmetry of a parabola.
Find the vertex, focus, directrix, and axis of symmetry of the parabola.(y=1)^2=-2(x-3)
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Pre Calculus

02/08/16

Mike covered 24 kilometers in 2 hours and the next 18 kilometers in 1 hour. What is his average speed per hour for the total journey?
answer choices are 9,6,14, and 12 kilometers
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Pre Calculus

02/07/16

please help me on this
When downloading a large file, Travis noticed that the estimated time remaining to complete the download decreased by 40 seconds for each additional megabyte downloaded. When he started the... more
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Pre Calculus

02/07/16

My daughter is stuck
x^2+y^2-4x+2y-4=0
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Pre Calculus

02/07/16

Pre Calc Homework, any help is appreciated!
A hangar is formed of a half cylinder with a rectangular base and two open, semicircular ends. The curved roof costs $7 per ft2 to build. Find an expression that represents the cost per volume of... more
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Pre Calculus

02/07/16

please help me on this one
exists between x and y such that Delta y = -4.8 Delta x. a. As x varies from 4 to 6.5, how does the value of y vary? The value of y changes by __________________ . b. As x varies from 3.3 to -2.8,... more
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Pre Calculus

02/06/16

Please help me on this
A sugar cookie recipe calls for 3 cups of flour for every 2 cups of surgar. If y is the number of cups of flour and x is the number of cups of surgar. Write a formula to determine the number of... more
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Pre Calculus

02/06/16

Please help me on this one
A word processor determines the width of the body of text on a page. If the page is originally 5 inches wide and has two equal size margins of x inches of each side of the text , write formula... more
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Pre Calculus

01/29/16

Determine whether a baseball hit 4ft above ground at 115ft per second at an angle of 25 degrees relative to level ground will clear a 10-foot wall 310 ft away.
I need help with the steps and answer 
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Pre Calculus

01/28/16

F (x)=2x+7
Find the inverse of function.
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Pre Calculus Conics

01/24/16

find the vertex,focus, and directrix
y^2= 16x-8
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Pre Calculus

01/19/16

A tightrope walker is 8 feet away from one end of the rope. If he takes 2 steps at 9 inches long per step, how far is he from the same end of the rope?
i know there are two possible answers. 
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01/13/16

Graphing Trig Functions & Inverses
Determine the Amplitude: f(x) = 5 sin (4x) a. 5 b. pi/5 c. 4 d. pi/4   Determine The Period: f(x) = -2cos(2x-90) a. 180 b.45 c. 4 d. pi/4   what is the horizontal shift for the graph of:... more
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Pre Calculus

01/12/16

Prove the identity cot^2x - cos^2x= cos^2x - cot ^2x
Pre calculus 
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Pre Calculus Algebra College Algebra

01/11/16

Need help with math question?
One box of Swiss Miss Cocoa Mix weighs 0.385 kg, but 39 grams of this weight is the packaging. Find the actual weight of the cocoa in 8 boxes.
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