Tuesday

February 9, 2016
Total # Posts: 54

**math(quadratic equation)**

Tom and Kathy together have 30 chocolates.Both of them lost 6 chocolates each,and the product of the number of chocolates now they have is 80.Find out how many chocolates do they have at the beginning.
*November 15, 2015*

**math**

Express (a^2+ab-ac-bc)÷a^2-c^2 over a-b in single fraction. Answer is a^2-b^2 over a+c How the steps?
*November 15, 2015*

**math**

Given that p-2q over p+2=3q ,express q in terms of p. The answer is C. p over 3p+8 I cant get the steps..help me
*November 15, 2015*

**Math**

In xy plane the line l has equation y= -x. point p lies on l and has coordinates(-2,2) If l is rotated counterclockwise 45 degree about the origin. what will be the image of p under this rotation.
*October 2, 2015*

**math**

Thanks so much steve!
*September 13, 2015*

**math**

Please help! (X+y)^3+(x-y)^3
*September 13, 2015*

**science**

a rocket is launched vertically at a height of 4km above the earths surface calculate the maximum height above the ground level
*September 6, 2015*

**statistics**

Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 210 feet and a standard deviation of 44 feet. Let X = distance in feet for a fly ball.
*March 11, 2015*

**Math**

A rectangular garden is to be fenced by a farmer. One side of the garden is next to the wall of the house and need not to be fenced. Find the dimensions of the largest garden that can be enclosed with 100m of fencing.
*August 28, 2014*

**Math**

What is the out put for: Input Output 4 0 5 2 6 4 7 6 12 ? explain the rule please
*January 10, 2014*

**Math**

Why do I have to post an answer. I don't know the answer that's why I am asking for help.
*January 10, 2014*

**Math**

Input Output 4 0 5 2 6 4 7 6 12 8 I'm not sure if this is right. I used different rules to get the answer. I need to know if there is a set rule for this kind of problem.
*January 10, 2014*

**Math**

What is the out put for: Input Output 4 0 5 2 6 4 7 6 12 ? explain the rule please
*January 10, 2014*

**add maths**

Given the functions g:x→x^2(x square)+4,find the value of the following 1.4g(1over2)?
*January 9, 2014*

**Statistics**

the 1st class in a relative frequency table of 50-59 an the corresponding relative frequency is 0.2. What does the 0.2 value indicate
*June 10, 2013*

**algabra**

Three individuals form a partnership and agree to divid the profits equally. x invest $9000, y invest $7000 z invest $4000. how much much less does x recieve than if the profists were divided in proportion to the amount invest
*June 10, 2013*

**Chemistry**

I am dealing with the integrated rate laws. Can somebody please help me with my algebra? First order ln(A)=-kt+ln(B) solve for t,and k and B Second order 1/(A) = kt+1/(B) solve for k and t and B
*May 13, 2013*

**Chemistry**

A swimming pool with a surface area of 5 meters by 10 meters contains 88,000 liters of water. The temperature of the water in this pool increases by 2.00 C when it is heated by the Sun for 6.00 hours. Calculate the energy absorbed. 1.1.48×109J 2.2.22×109J 3.7.4&...
*April 6, 2013*

**HR **

1. List and discuss the advantages and disadvantages of off-shoring jobs.
*March 24, 2013*

**science**

I don't understand how to do this problem because i don't see a precipitate. If you could show your work on the problem that would be great so i can follow along! Identify the spectator ion(s) in the reaction Zn(OH)2+ H2SO4→ZnSO4+ 2H2O in aqueous solution. 1....
*March 9, 2013*

**science**

I don't understand how to do this problem because i don't see a precipitate. If you could show your work on the problem that would be great so i can follow along! Identify the spectator ion(s) in the reaction Zn(OH)2+ H2SO4→ZnSO4+ 2H2O in aqueous solution. 1....
*March 9, 2013*

**Teacher Aide**

Thank you very much for giving your time to help me!
*March 9, 2013*

**Teacher Aide**

I don't understand how to do this problem because i don't see a precipitate. If you could show your work on the problem that would be great so i can follow along! Identify the spectator ion(s) in the reaction Zn(OH)2+ H2SO4→ZnSO4+ 2H2O in aqueous solution. 1....
*March 9, 2013*

**Teacher Aide**

and c
*March 9, 2013*

**Teacher Aide**

DrBob222, could you please help me with a chemistry question I posted?
*March 9, 2013*

**Science**

What volume of ethanol must be diluted with water to prepare 768 mL of 0.873 M solution? The density of ethanol is given as 0.789 g/mL. Answer in units of mL
*March 8, 2013*

**Chemistry**

What volume of ethanol must be diluted with water to prepare 768 mL of 0.873 M solution? The density of ethanol is given as 0.789 g/mL. Answer in units of mL
*March 8, 2013*

**chemistry**

I dont know
*February 16, 2013*

**chemistry**

the value of ΔH° for the reaction of 2 C6H6 (l) + 15 O2 (g) = 12 CO2 + 6H20 is -6535 kJ. how many kJ of heat are released in the combustion of 16.0 g of C6H6 (l) ?
*March 5, 2012*

**chemistry**

the value of ΔH° for the reaction of 2 C6H6 (l) + 15 O2 (g) = 12 CO2 + 6H20 is -6535 kJ. how many kJ of heat are released in the combustion of 16.0 g of C6H6 (l) ?
*March 5, 2012*

**accounting**

CMR= Contribution Margin/ Sales Contibution Margin=Sales-Variable Costs Answer= ((1800000-1080000)/1800000)*100%
*February 15, 2012*

**statistics**

Suppose that the height of male students at a large university is normally distributed with a mean of 69 inches and a standard deviation of 3.0 inches. If 16 samples consisting of 25 students each are obtained, what is the probability that the mean of these 16 samples is ...
*November 11, 2011*

**life orientation**

provide recommendation on how to address this environmental problem(hiv)
*September 13, 2011*

**physics**

Is the mass of an object has an effect velocity with it land on the ground when freely falling from rest?
*July 21, 2011*

**TRIGONOMETRY**

CSC - COS X COT = SIN
*June 28, 2011*

**physics**

A box is placed on top of another box,if it is exerting a compressive force of 500N.What is the approximate weight of the box?
*April 19, 2011*

**Life orientation**

Provide recommendations on how human problems on the community and name 2institutions or community organisations that are involved in supportingm or giving redress to these disaster
*April 8, 2011*

**Life orientation**

Ways in which the human problem impacts on the community
*April 8, 2011*

**math**

solve the system 3x-6y=5 and 2y=4x-6 using substitution method.
*January 23, 2011*

**organic chemistry **

Show the reaction equation and mechanisms of a mixture of napthalene,p-nitroaniline and benzoic acid dissolved in dichloromethane?
*December 2, 2010*

**organic chemistry **

Show the reaction equation and mechanisms of a mixture of napthalene,p-nitroaniline and benzoic acid dissolved in dichloromethane?
*December 2, 2010*

**chemistry**

Consider HA- the intermediate form of a diprotic acid. Ka for this species is 10-4 and Kb is 10-8. Nonetheless, the Ka and Kb reactions proceed to nearly the same extent when NaHA is dissolved in water. Can anyone explain that?
*October 12, 2010*

**Social Studies**

What are the major cities of the Aztec, Inca and Maya empires?
*December 17, 2009*

**algebra**

The shorter side of a triangle is 5 inches less than the medium size side. The larger side is 12 inches more than the medium size side. If the perimeter of the triangle is 40 inches, find the size of each side of the triangle. Show your work
*December 16, 2009*

**Electricity**

Lightning occurs when charges jump the gap between the ----- cloud and the ----- ground? Lightning can go to one of three places. It can: a.________________ b._________________ c._________________ The energy caused by the flow of particles with negative electrical charges is ...
*January 28, 2009*

**Electricity**

The energy caused by the flow of particles with negative electrical charge is called?
*January 28, 2009*

**math 6th grade**

Using Multiplication to Solve Equations 9-Y5 had only packed 1/8 of the meals he was supposed to pack. The astronut had only been given 3 3/4 meals. How many meals should 9y-5 have packed for the astronut?
*January 4, 2009*

**math 6th grade**

Using Multiplication to solve equations: 9y-5 had to iron space suits for the astronuts. When he finished he turned in the suits to his commander. The commander counted the suits and realized that 54 of them were missing. 9Y-5 blushed and explained that he had burned 1/4 of ...
*January 4, 2009*

**math 6th grade**

How to write an equation: Forty percent of a number,y, is 48.
*January 4, 2009*

**Calculus**

Interval 4sec(theta)(sec(theta)+tan(theta))d(theta) can someone help me start his problem?
*March 20, 2008*

**math - word problem. help asap?**

in a certain math class, each student has a text book, every 2 students share a book of tables, every 3 students share a problem book, and every 4 students share a mathematics dictionary. If the total number of books is 75.. how many students are in a class? how many students ...
*December 3, 2006*

**Math - Alegbra 2 some1 plz help?**

in a certain math class, each student has a text book, every 2 students share a book of tables, every 3 students share a problem book, and every 4 students share a mathematics dictionary. If the total number of books is 75.. how many students are in a class? how many students ...
*December 2, 2006*

**Math - PLZ HELP> ASAP**

Furnishing an apartment you have just graduated from HS and you and your best friend are looking to rent an apartment. The apartment you would like to rent costs 972.00 a month. You earn $1500 a month. You share montly expenses with your roomate: rent ($972), gas ($62), ...
*December 2, 2006*

**Math- VERY IMP. PLZZZ HELP!**

Mrs Walsh is seeking legal advice. A friend of her recommended two law firms - Legal Eagles, which charges a consultation fee of $100 plus $40 per hour and A-1 Attorneys, which charges a consultation fee of $60 per hour. A) Write an equation for the cost (C) of Legal Eagles in...
*December 2, 2006*

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