Friday
December 19, 2014

Posts by san


Total # Posts: 97

7th grade math
For the 3rd should be: =7x + 5 - 3y + 3x + 5 - 4y =10x -7y + 10
December 17, 2014

Economics
So b?
December 15, 2014

Economics
What is an oligopoly? A. An agreement by a formal organization of producers to coordinate prices and production B A market structure in which a few large firms dominate the market C A market structure in which two firms have a price way D a market structure in which a single ...
December 15, 2014

Economics
Thank you
December 15, 2014

Economics
according to the law of supply the higher the price A the more consumers are willing to pay B the larger the quantity produced c the smaller the quantity produced D the more the availability of a good is reduced
December 15, 2014

Chemistry
Transition metals exist in many oxidation states.
December 14, 2014

Biology
G1 checkpoint mechanism ensures that the cell is ready for cell division
December 14, 2014

Biology
yes
December 14, 2014

Biology
1. wrong, eye cells are somatic, while egg cells are not. 2. correct. 3. wrong. 78 homologous pairs would equal 156 total chromosomes.
December 14, 2014

physics
2) KE=1/2*m*v^2 sorry about that.
December 14, 2014

physics
1) KE=1/2*m*v^2 (KE*2)/v^2=m 2) KE=m*v^2 use the mass we found and convert mph to m/s
December 14, 2014

Biology
correct
December 14, 2014

chemistry
well if the system loses heat E, delta H is - , if the system requires an input of energy delta H is +
December 9, 2014

physics
what are you asking for?
December 9, 2014

Math
i don't know how you got 105. it should be 90. so, -10x=90 divide by -10
December 9, 2014

algebra
$5=F $2=T F+T=500 5F+2T=$1450 solve for either variable on either equation and plug into equation you did not use. the rest should pretty straightforward from there
December 9, 2014

math
before you actually apply these equations you need to know the equivalences between the two units being analyzed
December 9, 2014

math
oops y lbs * (x kg/ y lbs) = x kg
December 9, 2014

math
x kg * (y lbs/ x kgs) = y lbs
December 9, 2014

science
e=mc^2 solve for m
December 4, 2014

Biology
I'm assuming your asking how is the energy conserved? If so, it is in the form of ATP
November 25, 2014

Biology
during the ETC
November 25, 2014

Biology
Oxidative phosphorylation
November 25, 2014

algebra
this seems incomplete. is there anything else?
November 20, 2014

chem
look up hess's law. you should be able to figure it out
November 18, 2014

Math
F= frank, B= Buds F+B=56 b=f*8 plug in the equivalence and solve for f
November 18, 2014

Algebra please help out
You have a quantity of one compared to another quantity. example: 1cat/5Dogs For every 5 dogs, you'll have 1 cat.
November 18, 2014

physics
KE=1/2*m*v^2 solve for v
November 18, 2014

Algebra 2
All you need to do is FOIL
November 18, 2014

MATH
i dont know what youre question is
November 4, 2014

Math
they might be products of the proof that derived that formula
November 3, 2014

Math
13 in is the length of the foot if its a size 15 shoe. thats a big foot
November 3, 2014

Math
yeah just plug in the 15 for s into your formula and rearrange to find f, foot length
November 3, 2014

Math
are you just asking for rearrangement? if so, (s+24)/3=f
November 3, 2014

Algebra
im assuming youre talking about an equilateral triangle. the perimeter is A+b+C=18 and one side is 2x-1 so so 2x-1+2x-1+2x-1=18 combine like terms 6x-3=18 so 21/6=x x=3.5
November 3, 2014

math
its 180
November 3, 2014

math
youre right. i misread the problem
November 3, 2014

math
315
November 3, 2014

math
same rate as in she picks 9lbs/hr. if thats what shes asking. not clear
November 3, 2014

math
72/9= 8 hours so double the weight at the same rate? 144/9= 16*12= $192
November 3, 2014

Algebra
im assuming youre talking about an equilateral triangle. the perimeter is A+b+C=18 and one side is 2x-1 so so 2x-1+2x-1+2x-1=18 combine like terms 6x-3=18 so 21/6=x x=3.5
November 3, 2014

Algebra
what kind of triangle is it. and on what side?
November 3, 2014

physics
oops. but would the answer be correct if everthing was factored in?
November 3, 2014

physics
The average car today has a mass of 1100 kg, and when accelerating from rest, covers 0.25 miles in 15 seconds. Each rim and tire together has a diameter of 46 cm and a mass of 9.1kg. If we agree the rim and tire have the shape of a solid disk that rotates through its geometric...
November 3, 2014

Physics
PE =mgh = 0.1* 9.8 * 0.80 m = 0.784 J
July 9, 2014

PHYSICS
A SPRING WITH A CONSTANT K = 8N/m IS STRETCHED 5CM AND RELEASED. IT BOBS UP AND DOWN EVERY 2.5 SECONDS. WHAT IS ITS FREQUENCY, PERIOD, ABD AMPLITUDE
May 8, 2013

math
I don't know
February 26, 2013

solving equations by sibstitution
multiply the top by positive 8 and multiply the bottom by negative 6. then cancel out the y's and solve for x. plug x back into anyone and solve for y.
January 5, 2013

Physics
Oh. That was quite straight forward. Thank you.
January 5, 2013

Physics
A force of 3.0 newtons applied to an object produces a change in velocity of 12 meters per second in 0.40 second. the mass of the object is? I am not sure how to solve this problem. Formula for momentum is p= mass times velocity impulse (J) = Fnet times time in seconds
January 5, 2013

chemistry
Assume you are performing the calibration step of Experiment 8 and you begin with 70 g of water at 20 oC and 70 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the ...
November 1, 2012

ua
Assume you are performing the calibration step of Experiment 8 and you begin with 70 g of water at 20 oC and 70 g of water at 80 oC. After adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the ...
October 31, 2012

Physics
A hot air balloon containing an AP Physics student ascends vertically at a constant speed of 8 m/s. While ascending, he accidentally drops his rubber duckie from the gondola of the ballong. Seven seconds after it is dropped the duckie bounces off a roof at point A and hits the...
September 16, 2012

finance
The Nutrex Corporation wants to calculate its weighted average cost of capital. Its target capital structure weights are 40 percent long-term debt and 60 percent common equity. The before-tax cost of debt is estimated to be 10 percent and the company is in the 40 percent tax ...
September 12, 2012

Spanish
11. Si ---------- el número de mi jefe, le -------- para decirle que no puedo ir al trabajo hoy. A. sabría, llamara B.llamaría, supiera C. supiera, llamaría D.llamara, sabría My Ans: C 12. ------------ a la fiesta si ----------- encontrar un...
August 17, 2012

Spanish help please
Si ---------- el número de mi jefe, le -------- para decirle que no puedo ir al trabajo hoy. sabría, llamara llamaría, supiera supiera, llamaría llamara, sabría 12. ------------ a la fiesta si ----------- encontrar un vestido apropiado para ...
August 17, 2012

chemistry
abcbbbbbbbbbcddddaaaaaaaaaaaa
April 23, 2012

Maths
if the ratio of the length to the breadth of a rectangle be 5:3 and its perimeter is 144m, find the length of the rectangle .
February 4, 2012

fin decision making for managers
Aberdeen Corp. uses activity-based costing system with three activity cost pools. The following cost information is provided: Wages and salaries $ 220,000 Depreciation 120,000 Utilities 100,000 Total $440,000
November 26, 2011

Algebra II
x-5x=2(-3x+4)
November 5, 2011

chem
When a bond forms between C(H3) and MgBr, why would MgBr have a partial positive charge?
September 6, 2011

chemistry
How do I draw Lewis Structure for BN and CN-
August 18, 2011

Business Finance
35,0000
August 4, 2011

chemistry
PCL5(g) -> PCl3(g) + Cl2 (g) Kp= 23.6 at 500K Calculate the equlibrium partial pressures of the reactants and products if the initial pressures are Ppcl5 = 0.560atm and Ppcl3 = 0.500atm.
August 3, 2011

Chemistry
Is it possible to calculate heat of vaporization if i only have pressure and temperature.
July 20, 2011

Chemistry
but there aren't enough information to use Clausius-Clapeyron equation
July 20, 2011

Chemistry
On top of one of the peaks in Rocky Mountain National Park the pressure of the atmosphere is 500. torr. Determine the boiling point of water at this location. The heat of vaporization of water is 40.7 kj/mol.
July 20, 2011

Chemistry
How many grams of PbCO3 will dissolve in 1.00L of 1.00M H+ is added to 5.00g of PbCO3?? PbCO3(s) + 2H+ (aq) -> Pb2+ (aq) + H2O (l) + CO2 (g)
July 18, 2011

Chemistry
A 0.100g sample of a compound containing C, H, and O is burned oxygen producing 0.1783 g of CO2 and 0.0734 g of H2O. Determine the empirical formula of the compound.
July 18, 2011

BUSINESS
WHAT ARE the pros and cons of the following statement: “Egalitarian companies are more innovative.”
February 5, 2011

physics
The temperature of 6.80 mol of an ideal monatomic gas is raised 12.0 K in an adiabatic process. What are (a) the work W done by the gas, (b) the energy transferred as heat Q, (c) the change ΔEint in internal energy of the gas, and (d) the change ΔK in the average ...
November 11, 2010

physics
A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 67.6° above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 29.5 m away. By how much does the rocket clear the top of the wall?
September 17, 2010

chemistry
what particles with electrical charges repel one another
September 14, 2010

math
2 person in a business. first pur $100& gets $120 and second puts $80 and gets $100. Who gains more and by what percentage?
May 13, 2010

math
a. C'=-a/q^2 Units: dollars per cell phone unit
April 7, 2010

Physics
A commercial resistor can safely dissipate power only up to a certain rated value. Beyond this value, the resistor becomes excessively hot and often cracks apart. The resistor used in this experiment was rated by the manufacturer to be a 2 watt resistor. What is the largest ...
February 23, 2010

Business 210
Review the business in action case studies on pp.143,.146,.154, and 159 of the text in Cpt3 select one case that you find especially interesting and explain how ethics and decision making effect the individuals involved in the scenario.
November 2, 2009

college chem
n one experiment, the mass of the metal block is 93.3 grams, the volume of water used is 96.3 mL, the temperature of the cold water extrapolated to the time of mixing is 20.4oC, and the temperature of the metal block and water extrapolated back to the time of mixing is 28.7oC...
October 8, 2009

english
the term freewriting refers to?
January 20, 2009

English
I have to write and essay on similarity and difference. What are some points to writing paragraphs for the body?
July 8, 2008

speaker vs. poet
There is really no importance. But, the difference is that the poet is the person who writes the poem, and the speaker is the person who tells the story.
February 27, 2008

physics
why are ice packs at 0 degree better for cooling a sprained ankle than similar sized packs containing water at 0 degree? thanks Ice has much more thermal capacity to cool. Consider the heat that has to be removed at 0C to turn to ice, 80cal oer gram.
April 26, 2007

Public Administration
Does Jiskha have Public Administration or Organizational Behavior experts available? Or. is there an expert on public sector OB and public sector finance? Not exactly. The closest is one person has a Masters in Systems Management (UnivSouthernCal).
April 6, 2007

Biology
do you know if there are any good websites on population distrubution patterns and relevant adaptations of organisms? You need to choose a population. A species of orchids? A species of animals (kangaroo, etc)? A type of bird? A disease vector ? Make a list of desired ...
March 19, 2007

chem
how do u calulate percentage composition of NO2 [mass N/mass NO2] x 100 = %Nitrogen [mass O2/mass NO2] x 100 =%oxygen
March 17, 2007

chemistry
when 1.40 g of hydrated magnesium salfate is heated to constant mass, 0.68 g of the anhydrous salt remains. find the formula for the hydrated magnesium sulfate. MgSO4*xH2O ==> MgSO4 + xH2O grams water = 1.40 - 0.68 = ?? mols H2O = ??/molar mass H2O. mols MgSO4 = 0.68/molar ...
March 17, 2007

Biosci 101
Hi there :)I was just wondering if you knew how the lac operon theory works? And if there are any good websites for this? This is the best one I could find. http://www.dartmouth.edu/~cbbc/courses/bio4/bio4-lectures/ProkGeneControl.html Most sites discuss "operon theory&...
March 16, 2007

Biology
i need to understand how draw a kite diagram. Any good websites would be helpful Thank you for using the Jiskha Homework Help Forum. Hopefully, you mean the botanical chart:
March 12, 2007

physics conclusion
im not quite sure what to write for my conclusion for this physics experiment. The aim is to record measurements and carry out calulations with the correct number of figures. We had to take a brass rod and measure its width with vernier calipers which was 19.0 mm and its ...
March 10, 2007

Chemistry
enthalpy of combustion kj mol H2 + 1/2 o2 = h20 + 286 kJ how much did you see? 62.4 ml H2 1 mol of any gas at NTP = 24.5 L You need to clarify your question. Also define NTP.
March 8, 2007

Chemistry
Hoffmans apparatus find out the energy available per mole of water if it is split into h2 and o2 Data 1 mol of gas at NTP is 24.5l 31.2ml of _______ 62.4ml of _______ it looks like this question comes from a lab experiment. You have not provided all the details needed. Were ...
March 7, 2007

Science/maths
what are some problems you might encounter when a)finding the volume of a rugby ball b)finding the diameter of a tennis ball c) finding the mass of a grain of sugar can you help me then I help you please w/b a) submerge it in water in a graduated container and find its volume...
March 3, 2007

Science/maths
describe how you could make the following measurements and discuss any problems you might encounter a) finding the volume of a rugby ball b) finding the diameter of tennis ball. c) findin the mass of a grain of sugar a) submerge it in water in a graduated container and find ...
March 3, 2007

english essay
Here is a sample outline for the essay: Introduction: Topic: male/female communication Comparison of two articles (state article names) state thesis Body: Summarize both articles Comapare and contrast both articles argue for which one is better provide examples and analysis ...
February 25, 2007

english essay
Thanx alot again. Writeacher, Jenna, jk1115, for all your help thank you so much. Introduction: Topic: male/female communication Comparison of two articles (state article names) state thesis... i need help on this... What are the titles of the two articles? What main ideas are...
February 25, 2007

English Essay
When it comes to conversation, husband and wives often have problems that close friends of the same sex don't have. First, they may not have much to talk about, and second when they do talk. misunderstanding s often developed that lead to major fights. our research ...
February 24, 2007

English Essay
hello everyone...all my time spent on net surfing for if i can find some help with my HM essay....on Man to Man/Women to Women. please if someone can help out with this..i really appreciated. i m not really good on writing essay but i m looking for some help on this some ideas...
February 24, 2007

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