Sunday
February 19, 2017

# Posts by rocky

Total # Posts: 101

algebra
basically you are saying it is no solution?
February 6, 2017

algebra
-38=-4k-8+4k-28
February 6, 2017

algebra I
February 6, 2017

algebra
I think it is 42 I don't know
February 1, 2017

algebra
David weighs 20lbs.more than katy ,while Jonathon weighs 120lbs. less than three times katy's weight. If David and Jonathon weigh the same amont , how mush does katy weigh? How much much does David and Jonathon weigh?
February 1, 2017

algebra
Four times a number plus five times the number is the same as ten more then eight times the number. Find the number.
February 1, 2017

algebra
that is three
February 1, 2017

algebra
The lengths of the sides of a triangle are x,2x+1,5x+4inches. If the perimeter is 53inches, what is the value of x?
February 1, 2017

algebra
Using the equation below as a model, fill in numbers in the place of a and b to create a rational equation that has an extraneous solution. x+a/ax=b/x Part 1. Show all work to solve for x in the equation and check the solution. Part 2. Explain how to identify the extraneous ...
June 9, 2016

Math
May 24, 2016

english
English is the language of opportunity.why brother to teach indigenous languages?
April 25, 2016

physics
A 58 kg skier has a speed of 9.5 m/s at point A. She then encounters a 1.75 m deep dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m.
April 9, 2016

physics
DOnt Know
March 25, 2016

maths
two sprinters runs the same race of 100m. One runs at a speed of 10m/s and the other runs at the speed of 8m/s. by what time will the first sprinter beat the other sprinter?
November 7, 2015

Math
Wow i was having trouble on it, its my lesson today and i was SOOOO confused XD
February 25, 2015

Math 1
I have this same question and am stuck plz help
January 5, 2015

chem
A 0.167-g sample of an unknown compound contains 0.00278 mol of the compound. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O. 1.)Determine the molecular formula of this acid. 2.)Determine the molar mass of the unknown acid.
November 2, 2014

Algebra1
-3|2x+6|=-12 How to solve for x, I relley need help please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
September 17, 2014

Pre-Calculus
September 18, 2013

PHYSICS
An airplane is flying straight and level at a speed vo = 150 mph and with a constant time rate of increase of speed v' = 20 ft/s^2, when it starts to climb along a circular path with a radius of curvature p = 2000 ft. The airplane maintains v' constant for about 30s. ...
July 9, 2013

Miss Sue are this right?
June 2, 2013

Are this right?
June 2, 2013

Are this righ?
June 2, 2013

Physics
Two air-track carts move toward one another on an air track. Cart 1 has a mass of 0.336 kg and a speed of 1.16 m/s. Cart 2 has a mass of 0.634 kg. What speed must cart 2 have if the total momentum of the system is is to be zero? What is the system's kinetic energy?
November 5, 2012

-1.4 > or < than 2 3/4
September 4, 2012

math
Which describes this type of series? -20 - 18 - 15 - 11 … I think it is both arithmetic and geometric
March 22, 2012

Math Help
November 18, 2011

Learning
-9-(-1)
November 18, 2011

Chemistry
a middle-aged man has been diagnosed as being at high risk group of developing Coronary Artery Disease. Distinguish between the good and bad forms of this sterol. 'Explain the function of the good form of this sterol in the body. List the food groups that are the sources ...
September 24, 2011

Chemistry
Discuss in detail, the role played by DNA andRNA in genetic diseases. what are the breakthroughs, if any, in the treatment/management of genectic diseases?
September 12, 2011

Chemistry
a girl is celebrating her 7th birthday. each guest is served one large slice of choclate cake, a hamburger, french fries, and some oranges. identify the food groups mentioned above. if one slice of chocolate cake contains 35g of carbohydrate, 15g of fat and 5g of protein, ...
September 12, 2011

Chemistry
differentiate alkenes and alkynes, cis isomers and trans isomers. Describe how cis-trans isomers are used for night vision
September 10, 2011

Chemistry
the managing director of a well-known company on wall street thrives on a diet of fruit jam, bread, pasta, and coffee. She exercises intermittently. One day she decides to to her primary healthcare provider for a routine checkup. The healthcare provider recommends that she ...
September 10, 2011

Chemistry
At a prominent state hospital, a 45 year old woman is recieving a combined modality' treatment for the intial stage of breast cancer. State the two aspects included in this treatment. State the methods by which a radiation oncologist can administer these therapies. ...
August 28, 2011

Chemistry
What are the various uses of radioactivity in healthcare? What are the future trends in healthcare with respect to the use of radioactivitiy?
August 28, 2011

Chemistry
state three examples each of acids, bases,and salts commonly used in thera peutic processes. From the examples you state, select one acid, one base and one salt and describe how and where they are useed in therapeutic processes.
August 23, 2011

Chemistry
A 55 year old woman visits a popular eatery for lunch. She orders a cheese pizza and bacon pizza with extra cheese and has about 3 large glasses of cola (ph value 3). On the way back home she experiences heartburn and abdominal pain, and has diffigulty breathing. She drinks a ...
August 22, 2011

Chemistry
a 40-year-old manger at a prominent legal firm in L.A experiences abdominal pain post lunch. He goes to the restroom a couple of times, but continues to experience pain and cramps. He evevtually decides to get himself examined. While questioning him, you learn that he consumed...
August 21, 2011

Chemistry
could u plz give me alittle more help on the fist question.This is the proplem that is holding me back. I'd really appreciate your time and effort to answer this question
August 15, 2011

Chemistry
a freshmann is currently enjoying the arts studio program she is pursuing at a well know university. In her free time she likes to skate,take salsa dance lessons, and cook. She particularly enjoys and decides to pickle olives to the rescipe, she needs to add 3 teaspoons of ...
August 15, 2011

Chemistry
A robust first grader goes for swimming lessons three times a week,and he enjoys it thoroughly.During the first week of December, he develops an upper respiratory infection, starts coughing continuosly, and has a high fever of 39ºC. His condition remains the same after ...
August 7, 2011

intermediate algebra
rewrite with positive exponents. Assume that even roots are nonnegative quanities and that all denominators are nonzero. [3/ua^2)^-4
August 3, 2011

intermediate algebra
SOLVE BY FACTORING 2a^2-3a=-5
August 3, 2011

intermediate algebra
August 2, 2011

intermediate algebra
Rowing. Abby rows 10km. upstream and 10km. back in a total time of three hours. The speed of the river is 5km./h. Find Abby's speed in still water.
August 2, 2011

intermediate algebra
Express in terms of i. 2 divided by sqrt.,-36
August 2, 2011

intermediate algebra
Given the quadraticf(x)=x^2-14x+49, find a value of x such thatf(x)=36
August 2, 2011

intermediate algebra
Express in terms of i. 2sq.rt.divided by-36
August 2, 2011

intermediate algebra
use polynomial long division to divide 25x^3+40x^2+25x+10 by -5x^2-3x-2
August 2, 2011

intermediate algebra
Subtract. (5x^6+9x^4-2x^3-3)-(8x^6-8x^5+x^4-4)
August 2, 2011

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

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

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

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