11/22/15
In 3 years, 30% of a radioactive element decays. Find its half-life.
In 3 years, 30% of a radioactive element decays. Find its half-life.
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2cos (3t) = -1
Help!!
Find all solutions.
Please show steps.
Thank you!
11/21/15
find the partial fraction decomposition of the equation.
(4x^2-x-2)/(x^4+2x^3)
find the partial fraction decomposition of the equation.
11/21/15
asymptote F(x)=7+9/(x-3)
horizontal asymptote of F(x)=7+9/(x-3)?
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11/20/15
Linear Approximation Help!
Let g(x) = Integal of -25 to x^2 f(t) dt Use the techniques of linear approximation to approximate g(4.8) given the following information about f:f is continuous on (-00,00)f is an odd...
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11/19/15
real and imaginary zeros
Find all the real and imaginary zeros for the polynomial function.
f(x)=x^2+8x^2+5x-14
What are the real and imaginary zeros of (f)=x^3+8x^2+5x-14?
help is greatly appreciated, thank you!
11/19/15
Finding the radius of a circle
What is the radius of a circle in which an angle of 3 radians cuts off an arc length of 30cm?
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11/18/15
Use descartes rule of signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function: f(x)= 9x^7
Use descartes rule of signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function:f(x)= 9x^7 + 3x^5 - 8x^3 + 7x - 1
11/18/15
what is the antiderivative: 3e^x + 7sec^2x
this problem has to do with anti derivatives and integrals. please help
11/18/15
solve y= x/(1+ |x|) for x
How to solve this containing modulus of x.
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11/18/15
how to solve this synthetic division problem n^5+11n^4+24n^3-24n^2-44n-41/n+6
i want to know how to sovle this synthetic dividion problem.
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11/17/15
Find the dimensions of the garden that minimize the cost
A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $30/ft and on the other three sides by a metal fence costing $10/ft. If the area of the garden is 22...
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11/16/15
Standard form into Vertex form
Put the function y = 7 x^2 + 14 x + 18 in vertex form f(x) = a(x-h)^2 + k and determine the values of a, h, and k.
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11/16/15
volume of sphere
Show that where the radius of a circle of a sphere is doubled, its volume of the sphere increases by 8 times.
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Find the completely factored form of f (x) = 2x^4 - x^3 - 13x^2 - 6x IF (x+2) is one of the factors
Find the completely factored form of f (x) = 2x^4 - x^3 - 13x^2 - 6x IF (x+2) is one of the factors
11/15/15
logarithm applications
polonium 210 has a half life of 140 days. Suppose a sample of the substance has a mass of 300 mg.
a) find the function that models the amount of the sample at time t.
b)find the mass remaining...
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11/15/15
A home owner wants to fense 3 sides of his rectangular yard. She has 120 feet of fencing available. What dimensions will yield the maximum area?
A home owner wants to fense 3 sides of his rectangular yard. The fourth side will be the side of the house. She has 120 feet of fencing available. What dimensions will yield the maximum area?
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11/15/15
Logarithm applications
a logistic model for the word population is P(t)=73.2/(6.1+5.9e^-0.02t) where t=0 indicates the year 2000 and the population is measured in billions.
a) what world population does this model...
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11/14/15
Evaluate the following indefinite integral
Evaluate the following indefinite integral:
∫9/(√4-x2) dx
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