Saturday

February 6, 2016
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*

**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*