1,063 Answered Questions for the topic Pre-Calculus
Pre Calculus
08/25/15
Please help! Need to show work. So lost. Don't even know where to begin!!
A box with a square base and no top is to be made from a square piece of cardboard by cutting 4 in. Squares from each corner and folding up the sides. The box is to hold 100 in "cubed". How big a...
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Pre Calculus Trigonometry
08/20/15
What is the slope of the line parallel to the line whose equation is given by -y=-4x+6
this honestly has my mind boggled. I haven't been in school for 3 years and I am completely lost. I need an explanation of how to work this problem out or as much as you can tell me. thank you.
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Pre Calculus
07/22/15
Write an equation in slope-intercept form for the line described: the x-axis
Please help me write the equation.
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06/24/15
Word problem, Math, Matrix unit
"In a football game, Team A defeated Team B by a score of 28 to 10. The total points scored came from a combination of touchdowns, extra-point kicks, and field goals, worth 6, 1, and 3 points,...
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06/10/15
How do I answer these questions involving square roots?
1) Simplify the expression √32 + √98
2) Solve the equation by factoring. (2x-13)^2 = 8
3) Find the domain of the expression. √x^2 - 36 (the whole thing is under the square root symbol)
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Find a function whose graph is a parabola with this vertex and passes through this point
Parabola with vertex (7,8) that passes through the point (6,-9)
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How do I find the zeroes of this function?
f(x) = 25x2 + 60x + 36
and how do I find the maximum or minimum value of f(x).
06/08/15
Sonic boom trig question
The US Air Force was running maneuvers with the F22 Raptor, flying low enough so that you could see the shock cone created as the jet flies overhead at supersonic speeds. You wanted to take a video...
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06/03/15
Compound interest and exponential growth
I have no idea how to start this. Please help.
Oppenheimer has a mutual fund where an investment of $5000 at an annual interest rate of 10% compounded semianually over 25 years will yield a...
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Pre Calculus
05/28/15
Assume that f(x) = x + 5 x2 + 1 for every real number x. Evaluate and simplify the following expression. f(5a) =
Please solve for f(5a)
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Pre Calculus
05/18/15
Given sides of lengths 1604, 1560 and 164 meters, find the area
Please help solve this
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Pre Calculus
05/18/15
Given sides of lengths 585 and 550 meters, find the included angle if the opposite side is 145 meters
Please help
Pre Calculus
05/18/15
Given an angle of 0.12229 rads, a side 2410 meters long and an opposite side measuring 294 meters, find the possible lengths of the third side.
please help
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Pre Calculus
05/18/15
Given angles 0.33029 rads and 1.176 rads, with included side 160 meters long. How long are the other sides?
Please help
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Pre Calculus
05/18/15
A sector has central angle 1.93 rads and radius 5 meters. Find the area
Help me please
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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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Pre Calculus
05/11/15
If y = 1 / x – 1 , what is x in terms of y?
please answer
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Pre Calculus
05/06/15
Using a Pythagorean identity we see that the equation sin x + sin^2 x + cos^2 x = 1 is equivalent to the basic equation________
whose solutions are x =________ for any integer k.
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Pre Calculus
05/06/15
Solve this equation. Give a general formula for all the solutions using k to represent your arbitrary integer and using only angles between 0 and 2p.
Solve this equation. Give a general formula for all the solutions using k to represent your arbitrary integer and using only angles between 0 and 2π.
sin(2θ) = -1θ = ________________+ 2kπ (smaller...
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05/05/15
Write the sum using summation notation, assuming the suggested pattern continues.
Write the sum using summation notation, assuming the suggested pattern continues.-8 - 3 + 2 + 7 + ... + 67 summation of the quantity negative eight plus five n from n equals zero to fifteen...
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