Saturday
February 6, 2016

Posts by Jim

Total # Posts: 1,571

social studies (again)
I'm reading over and over, I just don't seem to find the answer. Any hits? Thanks!
February 2, 2016

social studies (@REED)
@Reed Yes, I have I just don't understand.
February 2, 2016

social studies (again)
Jean-Jacques Rousseau: In his book The Social Contract, Rousseau comes up with his theories on government. He believed in what he called “a state of nature” in which people are purely instinctual and harmful, so he says people made a contract with the government to ...
February 2, 2016

differential equations
dS/dt = f(S) = kS(1-S/N)(S/M-1) of a fox squirrel population from the previous section. Suppose that the parameters M and k remain relatively constant over the long term but as more people move into the area. the parameter N (the carrying capacity) decreases. (a) Assuming that...
February 2, 2016

History
I don't know, mmmm. let see
February 2, 2016

History
In his book Two Treatises on Government, Locke refuted the divine right of Monarchy, and established a theory which states that all men are men are born free and equal. Each person should have equal access to the natural rights of life, liberty, and property. No law should ...
February 2, 2016

differential equations
dS/dt = f(S) = kS(1-S/N)(S/M-1) of a fox squirrel population from the previous section. Suppose that the parameters M and k remain relatively constant over the long term but as more people move into the area. the parameter N (the carrying capacity) decreases. (a) Assuming that...
February 2, 2016

math
deposit $150.00 per month for 312 months. average interest is 4%. how much money will be account at the end?
February 1, 2016

Spanish
B
January 22, 2016

Math
Thank you very much Reiny. You broke it down perfectly for me.
January 21, 2016

Math
Its F(x)= 7x^(2). Sorry.
January 21, 2016

Math
Let f(x)=7x2. Find a value A such that the average rate of change of f(x) from 1 to A equals 84. A=
January 21, 2016

Math
A store owner bought comforters for x dollars and is marking them up 60 percent write two expressions that represent the selling price and show that they are equivalent.
January 12, 2016

Pre-calc
Please solve: 5sin2x + 3sinx - 1 = 0
January 10, 2016

Math
There are 14 children in little league baseball team. Only 9 can play at a time. The baseball season has 42 games. The coach decided that each of the 14 children would play in the same number of complete games.In how many complete games will Howard, one of the 14 children, play?
January 4, 2016

Algebra
A pudding recipe requires 2/3 of a cup of milk for every 1-3/4 cups of sugar. What is the unit rate of sugar to milk in the pudding recipe?
December 8, 2015

precalc
For each: a) Identify the ellipse as horizontal or vertical b) Give the coordinates of 1) The center 2) The major vertices 3) The minor vertices 4) The foci 1) [(x+4)2/64] + (y2/100) = 1 2) [(x-1)2 / 36] + [(y+3)2 / 25] = 1
December 7, 2015

Math
Use the correct form of factoring in order to find the x intercepts. 9r^2-5r-10
December 4, 2015

Algebra 2
Use the correct form of factoring in order to find the x intercepts. 9r^2-5r-10
December 4, 2015

Algebra II
eh whatever, I figured it out.
December 3, 2015

Algebra II
Find 2 positive numbers who differ by 8 and whose reciprocals add to be 1/3
December 3, 2015

English
Thanks for the help!
November 22, 2015

English
Combine these two simple sentences into a complex sentence. Many industrialized nations use the metric system. The United States refuses to adopt it. A. Although many industrialized nations use the metric system, the United States refuses to adopt it. B. Many industrialized ...
November 22, 2015

English
C, correct ?
November 22, 2015

English
Choose the option that corrects the error in the "quote". If no error exists, choose "No change is necessary." Bill, the foreman of the construction company, is concerned about the safety in the large building. "They have had" three accidents in ...
November 22, 2015

math
Of the 34 students in a class, there are 2 fewer students with blue eyes than there are students with hazel eyes. Also, there are twice as many students with brown eyes than there are students with blue eyes. Which of these is either the number of students with blue eyes, the ...
October 28, 2015

chem
Write a net ionic equation for the reaction that occurs when excess nitric acid (aq) and potassium sulfite (aq) are combined. Note: Sulfites follow the same solubility trends as sulfates.
October 27, 2015

Chemistry pls help
Ion flame test Why is it important to not let the wooden splint burn ??
October 25, 2015

Algebra 2
Solve each equation for the variable. Check your solutions, if possible. x/2+1=6
October 25, 2015

algebra
A train leaves Atlanta at 1:00 PM. A second train leaves the same city in the same direction at 5:00 PM. The second train travels 48 mph faster than the first. If the second train overtakes the first at 9:00 PM, what is the speed of each of the two trains?
October 19, 2015

Algebra
The farmer who named his pet rooster
October 19, 2015

Trig
The width of the box is 9 inch more than its length and the height of the box is 1 inch less than its length write an expression for the volume of the box
October 15, 2015

English
Identify the correct sentence. A. Where is the necklace from your sister and the earrings from your cousin? B. Where are the necklace from your sister and the earrings from your cousin? C. Where are the necklace from your sister in addition to the earrings from your cousin? D...
October 15, 2015

English
Identify the INCORRECT sentence. A. Amanda worked diligently on her algebra homework. B. Trudy bought a American-made car. C. My sister angrily slammed the door. D. You should concentrate closely on whatever you write. D
October 15, 2015

English
Which is __________ to write, a letter or an essay? A. most easiest B. more easy C. easiest D. easier
October 15, 2015

Physics
I can't tell you the answer unless you have the weight of the child since the gravitational potential energy is mgh (m is the weigh of the object, g is the gravitational constant 9.8N/kg and h is the height)
October 11, 2015

Algebra
Find two points on the graph of the parabola other than the vertex and x-intercepts. k ( x ) = ( x − 1 )^(2) − 6
October 7, 2015

Word problems
Jennifer serves the volleyball to Debra with an upward velocity of 10.5ft/s. The ball is 5 feet above the ground when she strikes it. How long does Debra have to react, before the volleyball hits the ground? Round your answer to two decimal places.
October 6, 2015

Chemistry
What is the molarity of Cu2+ in a catalyzed reaction using 3 drops of CuSO4 at .03M in 50.0ml, and what is the molarity of Cu2+ using 6 drops? (Consider the extent of dilution of the 0.1 M CuSO4 solution in preparing the 50 mL reaction solution. Estimate 20 drops/mL.) My Work...
October 3, 2015

Chemistry
Oh sorry, 30 minutes is supposed to be the half life, so it should say first order reaction which has a half life (t1/2) equal to 30 minutes. I know, do you have any advice on what you'd do for the significant figures part? Would you go with the answer on there or do none ...
October 1, 2015

Chemistry
A certain substance undergoes decomposition by a first-order reaction which has equal to 30.0 minutes. If the initial concentration of the substance is 1.28 mol/liter, what will its concentration be after 2.50 hours? 1. 0.36 M 2. 0.040 M 3. -0.32 M 4. 0.020 M 5. 0.16 M 6. None...
October 1, 2015

math
trevor paints 1/6 of the fence each day how many days will it take to paint 3/4 o the fence
September 24, 2015

Chemistry
At 573 K, gaseous NO2(g) decomposes, forming NO(g) and O2(g). If a vessel containing NO2(g) has an initial concentration of 1.9 × 10−2 mol/L, how long will it take for 75% of the NO2(g) to decompose? The decomposition of NO2(g) is second-order in the reactant and ...
September 23, 2015

Chemistry
The reaction 2NO(g) + 2H2(g) N2(g) + 2H2O(g) goes twice as fast when the concentration of H2 is doubled but four times as fast when the concentration of NO is doubled. What is the overall reaction order? I did it like this: k[NO]^m[H2]^n 2r=[H2]^n, meaning that the order for ...
September 23, 2015

pre calculus
The minute hand and the hour hand of a clock have lengths inches and inches, respectively. Determine the distance between the tips of the hands at 10:00 in terms of and m h.
September 20, 2015

Chemistry
Yeah, I was wrong, and it is a zero order reaction. If I do it that way, I get 4 to be an answer. Why can you do this as a stoichiometry problem? I guess I thought the rate orders were separate from the stoichiometric coefficients?
September 19, 2015

Chemistry
C. Consider the reaction 2C3H6 + 9O2 6CO2 + 6H2O. If the rate at which C3H6 is reacting is 0.40 mol liter−1s−1, then the rate at which 1. O2 is reacting is 1.6 mol liter−1s−1 2. CO2 is being formed is 0.40 mol liter−1s−1 3. H2O is being ...
September 19, 2015

Chemistry
Calculate the enthalpy change (ΔH) for: HCl(aq) + NH3(aq) → NH4Cl(aq) The reaction of 50.0 mL of 1.00 M HCl with 50.0 mL of 1.00 M NH3 causes a temperature rise of 6.4 ˚C in the resulting 100.0 mL of solution. The NH4Cl solution has a density of 1.005 g/mL and ...
September 15, 2015

Chemistry
Follow up question: Explain why the reaction of aluminum metal with aqueous sulfuric acid solution has very nearly the same ΔH value as the reaction between aluminum metal and HCl? Consider the atomic level. All I have is that they have the same net ionic equations. The ...
September 10, 2015

Chemistry URGENT!
If the reaction of 0.500 grams of aluminum metal with excess aqueous HCl releases 9.72 kJ of heat, what is the ΔH value for the reaction? 2 Al(s) + 6 HCl(aq) → 2 AlCl3(aq) + 3 H2(g) All I have is: .500gAl*(1 mol Al/26.98gAl) Please and thank you so much!
September 10, 2015

Chemistry
The PH3 molecule is 1. linear 5. tetrahedral 2. bent 6. trigonal bipyramidal 3. planar triangular 7. octahedral 4. trigonal pyramidal 8. None of these Do you think the professor is asking for molecular shape or electron geometry. I know the electron geometry is tetra and the ...
September 9, 2015

Chemistry
Which of the following molecules has a double bond? 1. NO3- 4. H2 2. C2H4 5. C12 3. SO2 6. None of the previous answers I got that three of these molecules have a double bond (NO3-, SO2, and C2H4), but the answer is one. I am thinking that maybe the professor wants C2H4 ...
September 9, 2015

physics
A photographer in a helicopter ascending vertically at a constant rate of 1.2m/s accidentally drops a camera out of the window when the helicopter is 46m above the ground. How long will it take the camera to reach the ground
September 6, 2015

math
John has to catch a 3:35 train bicycling at 10 miles an hour distance 4 miles what time should he leave his house
August 29, 2015

Programming
This question is about football matches between teams. A record of games played between teams is stored in a graph G. Each edge in the graph corresponds to a match between a pair of teams. For example, if there is an edge between vertices 3 and 6 then Team 3 has played a match...
August 15, 2015

Physics
A spaceship is on a straight-line path between the Earth and the Moon. At what distance from (the centre of) Earth is the net gravitational pull on the probe from the Earth and the moon zero? Mass of Earth = 6×10^24 kg. Mass of Moon = 7×10^22 kg. The distance from ...
August 14, 2015

Physics
Two equal-mass stars orbit their centre of mass. The distance between the stars (measured from the centre of mass of each) is 1 AU. What is the period of revolution in years? How much energy would be required to unbind these stars if they each have the same mass as the sun? ...
August 14, 2015

Math
Find 3 consecutive positive integers whose product is 5 more than the cube of the middle number. Tried x*(x+1)*(x+2) = (x+1)^3 + 5, but that solves to x = -6 which isn't positive.
July 21, 2015

grad stats
. Create standardized scores for all scale variables (price through alcohol). Which beverages have positive standardized scores on every variable? What does this mean?
June 23, 2015

Chem 30
The solubility of KCL is water is 30g/100g of water at 20 degrees centigrade. A heated solution containing 60g of KCl in 140g of water is cooled to 20 degrees C. How many grams should precipitate out of solution?
June 22, 2015

Grad Economic
If the real money demand is greater than the real money supply, interest rates must rise to reach equilibrium in the money market as institutions sell bonds to obtain more money.
June 11, 2015

ECONOMIC
What economic factors are relevant in managerial decision making?
June 5, 2015

ECONOMIC
Describe the market structure of the beverage industry.
June 5, 2015

ECONOMIC
The income elasticity for most staple foods, such as wheat, is known to be between zero and one. As incomes rise over time, what will happen to the demand for wheat? What will happen to the quantity of wheat purchased by consumers? What will happen to the percentage of their ...
June 5, 2015

ECONOMIC
Suppose that the demand for oranges increases. Carefully explain how the rationing function of price will restore market equilibrium
June 5, 2015

ECONCMIC
Suppose that the price elasticity of demand for wheat is known to be -0.75. Will a good wheat crop (which increases the supply of wheat) be likely to increase or decrease farmers’ revenues?
June 5, 2015

math
A bird is flying southward at a rate of 480 mph. There is an east wind blowing at 60 mph. What is the new speed and direction of flight of the bird?
May 28, 2015

Stats
Would you necessarily expect the confidence interval to be the same as a test of significance? From how I see it is say yes cause then it proves the answer twice in two difference methods ?
May 24, 2015

Chemistry
How many seconds does it take to deposit 81.5 g of Zn on a steel gate when 21.0 A is passed through a ZnSO4 solution?
May 21, 2015

Calculus
Let f for all Real numbers, be an odd function. Explain why, for any positive number a, the integral from -a to a of f(x) = 0.
May 19, 2015

Math
Thank u two!!
May 12, 2015

Math
(-2c^4)(4cd)(-cd^2)
May 12, 2015

Science
Should the government establish a national park to preserve the tundra in Alaska?
May 11, 2015

Math
Thanks Henry!!!
May 10, 2015

Math
Solve for y, state the m and b, and graph. X-3y+9=0
May 10, 2015

Physical Science
A girl pushes on a box of Christmas Ornaments with a mass of 12 kg and it moves an acceleration of 2m/s^2. With what force does the girl push on the box?
May 8, 2015

Algebra 2
Using data for the effect of temperature and wind on an exposed face, the National Weather Service uses the following formula, Wind Chill Index = 35.74 + 0.6215𝑇 − 35.75𝑉!.!" + 0.4275𝑇𝑉!.!" 𝑇 is the temperature in degrees...
May 1, 2015

stat
Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. A researcher wishes to estimate the mean amount of money spent per month on food by households in a certain neighborhood. She desires a margin of error of . Past...
April 26, 2015

math
what did you use pythagoras for and how?
April 20, 2015

Math
A rocket is launched straight up. At t seconds after being launched, its altitude is given by h = 4t^2 metres. You are on the ground 400 metres from the launch site, watching the rocket. The line of sight from you to the rocket makes an angle theta radians with the ...
April 20, 2015

Math
If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?
April 15, 2015

Math
If you were stacking 13 in. boxes in a 58 in. closet, would you round up or round down to determine how many can fit? How many would fit? How do I solve this problem.
April 8, 2015

english
I need someone's help on editing my paragraph.... OPC is a great place for an athlete because OPC offers many options for the athletes and don’t forget about their countless banners. OPC as school give the athlete’s the opportunity to choose from a wide variety ...
March 30, 2015

math
The function f(x) = cx/2 x+3 satisfies f(f(x))=x for all real numbers x\= -3/2. Find c.
March 27, 2015

ALgebra
The function f(x) = cx/2x+3 satisfies f(f(x))=x for all real numbers x\= -3/2. Find c. (\= does not equal)
March 27, 2015

Physics
A 10kg suitcase is placed on a horizontal conveyor belt the top of which moves to the right. The coefficient of static friction between the belt and box is µs = 0.5 and that of kinetic friction is µk = 0.3. a) Sketch a free body diagram for the suitcase, showing ...
March 25, 2015

math
Trent wants to build a rectangular pen for his animals. One side of the pen will be against the barn; the other three sides will be enclosed with wire fencing. If Trent has 400 feet of fencing, what dimensions would maximize the area of the pen?
March 20, 2015

Physics
An F-18 with a weight of 22500 lbs lands on a carrier with a speed of 120 mph. If the run-out of the arresting cable is 160 ft, what is the planes acceleration in feet per second squared?
March 15, 2015

Geom
I have a 25cm wheel across how many rotations to go 100000 kilometers
March 14, 2015

Chem
In photography, unexposed silver bromide is removed from film by soaking the film in a solution of sodium thiosulfate, Na2S2O3. Silver ion forms a soluble complex with thiosulfate ion, S2O3^2-, that has the formula Ag(S2O3)2^3-, and formation of the complex causes the AgBr in ...
March 10, 2015

precalculas
write as a single logarithm 2IN plus In y munus In2y
March 9, 2015

precalculas
the population of preston is 89000 and is decreasing by 1.8% each year A:Write a function that models the population as a function of time t b predict when the population will be 50000
March 9, 2015

Physics
After a snowstorm a boy and girl decide to have a snowball fight. The girl uses a large slingshot to shoot snowballs at the boy. Assume that the girl fires each snowball at an angle 0 from the ground and that the snowball travel with an initial velocity of V0.. 1.in terms of ...
February 23, 2015

math
6/12
February 12, 2015

math
for what value of x (radicand) and n (index) can the expression "n root x " not be evaluated?
February 5, 2015

math
1 x 9 .5 x 9 10 x 1
February 3, 2015

math help
thank for helping Steve.
January 31, 2015

math help
(x+5)^2 - (x-5)^2 is factored, it can be written as Ax where A is a whole number. The value of A is?
January 31, 2015

2nd grade math
Yes. You can take a four sided shape and have a line go through one corner to the opposite. that would be two triangles making up a four sided shape.
January 29, 2015

Geometry
How many different surface areas are possible when 8 one inch cubes are arranged so that each has one or more faces in common (touching) with at least one of the other cubes? We have to use a physical model. And I have no idea how to start this or even do it. Please be ...
January 25, 2015

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