2,195 Answered Questions for the topic Pre Calculus
11/30/18
y varies jointly as x
y varies jointly as x and z. y=48 when x=2 and z=8. Find y when x=6 and z=5... Again, I don't get it.
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11/30/18
If y varies inversely as x
If y varies inversely as x, and y=19 when x=4, find y when x=6??? Im lost. just show the steps plz... help
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Pre Calculus
11/29/18
I’m having trouble with this problem
A broadway theater has 400 seats, divided into orchestra, main, and balcony seating. ... a broadway theater has 400 seats, divided into orchestra, main, and balcony seating. orchestra seats sell...
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11/29/18
What is the mass (in mg) of the sample? And what is the mass 6 weeks after the start?
The half life of Palladium-100 is 4 days. After 20 days a sample of Palldium-100 has been reduced to a mass of 3 mg.
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You work in a lab and are growing a bacteria culture.
Here is my question of Precalcus question, You work in a lab and are growing a bacteria culture. Your assistant has estimated that the initial number of bacteria is 350. According to your manual,...
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Pre Calculus
11/12/18
How do I solve this equation?
((a/a^2-25))((a^2+2a-15/a-3))
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Pre Calculus
11/03/18
Given the function
Given the function f(x) = 0.7e^1.4x - find its inverse- state the domain and range of each function - graph both functions on the same set of axes
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11/03/18
If the half-life of a radioactive substance is 86 hours, to the nearest hour, when will 85% of the substance have disappeared?
Hello! I am having trouble answering and understanding this math problem. I would appreciate the help!
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Pre Calculus
11/01/18
how to solve this word problem?
two people, Bert and Alain, 8.4 miles apart spot a hot air balloon at the same time. the angle of elevation from Bert to the balloon is 24 degrees 10'. The angle of elevation from Alain to the...
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Pre Calculus
10/29/18
find cos if sin=-1/3 and tan=>0
i dont understand how to do this problem can you please help.I have a test on wedsnday. It would mean alot to me thank you. im really really struggling in pre cal
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Pre Calculus
10/28/18
given f(x) = 3x-1 and g(x)= 2x+5 find (f+g)(x+1)
Pre Calculus
10/28/18
suppose that the manufacturer of a gas water heater has found that, when the unit price is (p) dollars, the revenue (R) (in dollars) is R= -4p^2+4000p
it’s asking to sketch the graph of the function, find what unit price should be established for the water heater to maximize revenue and what is the maximum revenue?
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Pre Calculus Algebra
10/28/18
Math Question (Algebra)
3 times a number, added to -6, plus 5 times the sum of 4 times the number and 9 is 62
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Pre Calculus
10/21/18
Function decreasing on an interval
if a function is decreasing on the interval (-∞, ∞) is it possible for the function to be either an odd or even function?
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Pre Calculus
10/20/18
Describe the left-hand and right-hand behavior of the graph of the polynomial function.. h(t) = − 4 /3 (t − 8t3 + 4t4 + 9)
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10/08/18
Determine the type of conics each equation represents using the discriminant.
1. 2x2-4xy+8y2+7=02. 2xy-x+y-3=03.x2-y2+4=0
Pre Calculus
10/06/18
how to solve it?
A 12 wheeler truck is loaded with 13 piles of log. The bottom row contains 25 logs. Each of the remaining piles contains 2 logs less than the number of logs on a pile directly below it. Find the...
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Pre Calculus Fundamental Theorem
10/05/18
given the degree and zeros. Degree: 4, zeros; -5 -2i ; 4 multiplicity 2
Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree 4; zeros: negative 5 minus 2 i ; 4 multiplicity 2
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Find the cubic polynomial with zeros 3 and 3+4i ( and 3-4i) and having f(1) = 64
Find an nth-degree polynomial function with real coefficients satisfying the given conditions. If you are using a graphing utility, use it to graph the function and verify the real zeros and the...
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Pre calculus question !!!
How many solutions does the equation sin(x) sin(2x) sin(3x)... sin(11x) sin(12x) = 0 have in the interval (0,π ] ?
(a) 11 (b) 12 (c) 24 (d) 46 (e) 68
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please help me solve the question !!
Given two points A (1,2,3), B (7,6,5), let S be the set of all points in (x, y)–plane such that PA is orthogonal to PB, then >>
(a) S is empty (b) S contains exactly one point ...
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09/27/18
please help me solve the question !!
How many lines on the coordinate plane that has distance 1 to the origin O(0,0) and distance 2 to the point A(3,0) ??
(a) 1 (b) 2 (c) 3 (d) 4 (e) infinitely many
Pre Calculus
09/17/18
vertex form of 7x^2 − 14x + 1
find standard form
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