1,642 Answered Questions for the topic Math Help For College
12/02/13
Use the definition of inverses
Use the definition of inverses to determine whether f(x)=(5x-3)/(2x+1) and g(x)=(x+3)/(5-2x) are inverses
Math Help For College
11/30/13
approximate each real zero as a decimal to the nearest tenth
Given f(x)=6x^4-7x^3-23x^2+14x+3, approximate each real zero as a decimal to the nearest tenth.
11/30/13
a body falling freely
For a body falling freely from rest (neglecting air resistance), the distance the body falls varies directly as the square of the time. If an object is dropped from a tower 400 ft high and hits the...
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11/30/13
the weight of an object............
The weight of an object varies inversely as the square of its distance from the center of the Earth. If an object at sea level (3978 mi from the center of the earth) weighs 220 lb, find its weight...
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Math Help For College
11/27/13
Use the boundedness theorem
Use the boundedness theorem to show that f(x)=x^5-2x^3-x+2 has no real zero less than -3 and no real zero greater than 3
11/25/13
please help
Explain how the graph of f(x)=(-2)/(x-3)^2 can be obtained from the graph of y=1/x^2 by means of translations, compressions, expansions, or reflections
Math Help For College
11/24/13
perform indicated operation. Write in lowest term
1. x^2-2x-35/x^2+10x+25*x^2+4x-5/x^2-8x+7
2. 16-x^2/x^3+64*x^2/x^2-2x-8 divded by x^2+4/x^2-4x+16
3. 3x^2-6x-105/x^2-3x-28 divided by x+5/4x+16
4. 4/x-3-2/x+1
5. 3/x^2-4x+4-2/x^2-4
6....
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Math Help For College
11/24/13
write each rational expression in the lowest terms:
1. 100a^3bc^2/40a4c
2. 2x^2-2x-40/x^2-25
3. xy-4y-3x+12/x^2-7x+12
Math Help For College
11/22/13
im stuck on this one
develop your own real world equation using words for the variables. Then, translate your equation into polynomials and share both versions of the equation
Math Help For College
11/19/13
Find all complex zeros
Find all the complex zeros of f(x)=5x^4-4x^3+19x^2-16x-4. Give exact values
Math Help For College
11/19/13
Descartes' rule
Use Descartes' rule of signs to determine the possible number of positive real zeros and the negative real zeros for f(x)=x^4-9x^2-6x+4
Math Help For College
11/19/13
synthetic division
Use synthetic division to decide whether k=2, k=-1, or k=0 are zeros off(x)=x^4-6x^3+x^2+24x-20. If not, give the value of f(k)
Math Help For College
11/19/13
Find height of a projectile
Height of a Projectile. A stone is thrown directly upward from a height of 30ft with an initial velocity of 60ft/sec. The height of the stone t seconds after it has been thrown is given by the...
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Math Help For College
11/13/13
What is the equation of a line with slope -1/2 and passing through (-4, 1). How do I write it in slope-intercept form.
How can you tell which formula(s) to use on the attached problem?
Slope formula
m =y2-y1_____x2-x1point-slope formulay-y1 = m(x-x1)
slope-intercept formulay = mx +b
Math Help For College
11/02/13
I need help, once I see how this is worked I can do the rest with no problems
I have the problem
4 1/4 x
_____ = _____
5 1/5 6 1/6
I need help working this problem
Math Help For College
10/25/13
-36 mutiplied by -5/24=
what is the steps and answer to -36 multiplied by -5/24=?
10/16/13
Evaluate the function at the indicated values.
Evaluate the function at the indicated values.
1.) g(x)=3x^2-4
a.) g(x^2 )b.) g(3x^2-4)c.) g(x-h)d.) g(x)-g(h)e.) (g(x+h)-g(x))/h, h ≠0 2.) G(x)=√(4-x) a.) G(4-x)b.) G(4-x^2 )c.) G(4-x^4 )d.)...
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10/16/13
Define the following functions.
1. f(x)= |x|; g(x)= |x-3| a.) f+gb.) f-gc.) f⋅gd.) f/ge.) g/f
2. f(x)=1/(x+1); g(x)=x/(x-2) a.) f+gb.) f-gc.) f⋅gd.) f/ge.) g/f
3. f(x)=x^2; g(x)=1/√x a.) f+gb.) f-gc.) f⋅g
d.) f/ge.) g/f
10/16/13
Solve each item completely.
I. Solve each item completely.
1. Shipping charges are often based on a formula that offers a lower charge per pound as the size of the shipment is increased. Suppose shipping charges are as...
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10/13/13
Find an equation of a line
Find an equation of the line. Write the equation using function notation. (Show all work)
Through (2,-5);perpendicular to 9y=x-18
Solve the equation for m
Solve the equation for m and show all work
(m-9)/4 - (4m-14)/7 =2
Solve the equation
Solve the equation for x and show all work
(x2+2)/(3x2-5x+2)+-3/(x-1)=-5/(3x-2)
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