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Posts by Rocky

Total # Posts: 145

intermediate algebraDivide
Using polynomial long division to divide. 25x^3+40x^2-25x+10 by -5x^2-3x-2
August 1, 2011

intermediate algebra
use thr discriminant to determine wheather the following equations have solutions that are two different rational solutions;two different irrational solutions; or two imaginary solutions.8x^2+7x+3=0
August 1, 2011

intermediate algebra
I understand where I should what from where plz help me out. It would really be appreciaeted.
August 1, 2011

intermediate algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions,state this. 3x+7y=77 -2x+7y=42
August 1, 2011

intermediate algebra
rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. [3}^-4 --- ua^2}
July 30, 2011

intermediate algebra
Solve using the elimination method. Show all work. If the system has no solution or an infinite number of solutions, state this. 3x+7y=77 -2x+7y=42
July 30, 2011

intermediate algebra
Solve uing the subtitution method. Show your work. If the system has no solution or an infinite number of solutions, stat this,3x-15y=-12 3x+24y=-12
July 30, 2011

intermediate algebra
if a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310. where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth's...
July 28, 2011

intermediate algebra
In solving the equation (x-1)(x+2)=30. Eric stated that the solution would be x-1=30¨T¡úx=31 or(x-2)¨T30¨T¡úx=32 However, at least on of these solutions fails to work when subsitituted back into the orignal equation. Why is that? Please ...
July 28, 2011

intermediate algebra
compleletly factor the following expression 9y^2-16z^2
July 26, 2011

intermediate algebra
factor out the greatest common factor from the expression 6x^3yz^4-3x^2y^3z^4-18^4y^2z^3
July 26, 2011

intermediate algebra
factor out the greatest common factor from the expression 24xyz^2+20x^2yz-4x^2z^2
July 26, 2011

intermediate algebra
completely factor the expression 150x^2-420xy+294y^2
July 26, 2011

algebra
factor the expression a^2-6ab+9b^2 into a product of binomials
July 25, 2011

algebra
factor out the greatest common factor from the expression 18x^5+48x^2-30x
July 25, 2011

algebra
use the "difference of squares" rule to factor the following expression. x^2-81
July 25, 2011

algebra
factor out the greatest common factor from the expression. 18x^7-14x^2
July 25, 2011

algebra
Factor the expression 25x^2-60xy+36y^2 into a product of binomials.
July 24, 2011

algebra
The area of a rectangular athletic field is represented by the expression 81y^2-16z^2 square meters. Write an algebraic expression to represent one possible set of dimensions(in the sense " length times width") of the athletic field. Include correct units with your ...
July 24, 2011

algebra
Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x). But when Melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x),she got 20x^3-48x^3+32x^2; thus, Andrew's solution does not appear to check. Why is that? Please help Andrew to understand...
July 24, 2011

algebra
plz help I'm totally lost on this one I do not even know where to begin any help would be greatly appreciated.
July 24, 2011

algebra
factor the following expression completely: 70w^3-125w^2+30w
July 24, 2011

algebra
factor completely. remember to look first for a common factor. if a polynomial is prime,state this -4t^2+64
July 24, 2011

algebra
factorcompletely. if polynomial is prime, state this 9+8t^2-18t
July 24, 2011

algebra
factor by grouping if possible and check 5x^3+4x^2-10x-8
July 24, 2011

algebra
Essay. show all work. A gardener wants to create a triangluar garden in the shape of a right triangle with shortest legth x-3y ft. and the middle length side x+6y ft. What ia an algebraic expression for the area of the garden? be sure to multiply this out and express in ...
July 22, 2011

chemistry
equilibrium CO(g)+2H2(g)<->CH3OH(g)calculate these concentrations:CO(g) in an equilibrium mixture containing 0.933mol/L H2 and 1.32 mol?l CH3OH.
July 18, 2011

chemistry
what is the percent by mass of NaHCO3, in a solution containing 20 g NaHCO3 dissolved in 600 mL H20
July 14, 2011

chemistry
At 20°C, a solution contains 120 g of NaNO3 in 100 g of water. Is this solution saturated, unsaturated, or supersaturated?
July 14, 2011

Chemistry
a sample of gas of unknown pressure occupies 0.766 L at the temperture of 298k the same sample of gas is than tested under known conditions and has the pressure of 32.6kPa and occupies 0.664 L at 303 k. What is the original pressure of gas
July 13, 2011

AP US History
Analyze the extent to which TWO of the following influenced the development of democracy between 1820 and 1840. -Jacksonian economic policy -changes in electoral politics -Second Great Awakening -Westward movement
April 10, 2011

Algebra
Write a direct algebraic proof to show that if a/b=c/d, then a+c=b+d
April 3, 2011

World geography
Midddle Ages
March 24, 2011

Algebra
How do you simplify (r+3)^3?
February 10, 2011

physics
d=initial velocity times time + (1/2)at^2 -50=0+ (1/2)(-9.81)t^2 t=3.19 seconds
January 16, 2011

Chemistry
I agree with anon, tony is stupid
November 14, 2010

Algebra
The average mark on a test in an algebra class is 80. If the two lowest scores of 34 and 48 are not counted, the remaining scores would average 83. How many students are in the algebra class?
October 28, 2010

Algebra
1/5(a-2)-2/5(a-3)>2a-1/3(4+5a)
October 28, 2010

algebra
how do I simplify -2xyz^3/5x^2z^2 times 10xy/x^3
October 27, 2010

Math
Suppose that Barry Bonds has 148 hits in 500 at bats. How many hits does he need in his next 10 at bats to raise his batting average to .300?
March 11, 2010

adult education
A firm is assigned the network part 128.171. It selects an 10-bit subnet part. a) Draw the bits for the four octets of the IP address of the first host on the first subnet.
November 7, 2009

7th grade math
He has 13 weeks with some extra money left over!!!
August 25, 2009

Math
The mean height is 5 ft 4 in. How many students are in the class?
May 11, 2009

Biology
This is my question from my Biology paper. List which organs and tissues come from the mesoderm primary cell layer. Thanks
October 16, 2008

Geomatry
Which Solid can be defined as the regular polyhedron (a solid with all faces identical regular polygons) with the greatest number of faces? Please help thank you http://en.wikipedia.org/wiki/Regular_polyhedra There are nine regular polyhedra. Choose the one with the most faces..
March 31, 2007

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