# Posts by Anonymous

Total # Posts: 109,592

**Chemistry**

3w Go to chemteam - info / Thermochem / Calculate a Calorimeter Constant - html

**critical thinking**

We may observe, that there is no species of reasoning more common, more useful, and even necessary to human life, than that which is derived from the testimony of men, and the reports of eye-witnesses and spectators. This species of reasoning, perhaps, one may deny to be ...

**Algebra 2**

njjj

**math**

Given a+b=7 and a–b=3, find: 2^a·2^b 3^a÷3^b

**math**

If ab = 8 and a^2+b^2=16, then what is the value of (a+b)^2?

**math**

for the first one, isn't it supposed to be x= a^2x

**math**

Given that a^b = x, evaluate the following; a^(b+2) 2a^3b+a^2b+ab

**Math - Calculus**

So once I solve for c, how does that translate to f'(x)?

**Math - Calculus**

Given f"(x)=5x+2 and f'(-3)=3 and f(-3)=-6 find f'(x)= find f(3)=

**Math**

The area of the putting green at the golf course is 1,134 what will be the area of the putting green Theo constructs

**math**

Sorry that was me being an imposter

**math**

Ahh see now you're being nicer Ms. Sue.

**social studies**

1. Which modern, independent nation was founded through the leadership of a slave? *Belize *Mexico *Haiti****** *Cuba 2. What was the name of the criollo priest who helped begin Mexico's struggle for freedom in 1810? *Toussaint L'Ouverture *Simon Bolivar *Jose de San ...

**Science**

How many grams of potassium iodide crystals is needed to make 1M.

**sam k.d**

a charge 5mc is placed at a point. What is the work required to carry 1C of charge once round it in a circle of radius 12cm.

**chemistry**

Calcium is determined gravimetrically by precipitating it as CaC2O4â‹… H2O, followed by isolating the precipitate as CaCO3. The sample to be analyzed is dissolved in 10 mL of water and 15 mL of 6 M HCl. After dissolution, the resulting solution is heated 24 to ...

**chemistry**

Aluminum can be determined gravimetrically by precipitating as Al(OH)3 and isolating as Al2O3. A sample containing approximately 0.1 g of Al is dissolved in 200 mL of H2O and 5 g of NH4Cl and a few drops of methyl red indicator is added (methyl red is red at pH levels below 4 ...

**critical thinking**

It is highly conducive to the interests of the community that each individual should enjoy a liberty perfectly unlimited of expressing his sentiments I think this one is acceptable by observation. Am i right?

**philosophy-critical thinking**

Many people have reported encounters with ghosts. is this unacceptable by testimony?

**Language arts**

in rose pogonias which type of figurative language is found is line 6 and 7? A)symbol B)metophor C) personification D) simile

**Math Help Please ASAP**

Ms.Sue, "TheGrudyHippo" probably ran out of time and had to try and do it herself. It doesn't mean she blantantly ignored your answer, but she probably had to finish before going to bed or something of the sorts.

**Ethics**

What are the fundamental values of each of these health systems: The system In Mexico, the system in Canada, the system in the United Kingdom, and the system in the United States? I think it has to do with comparison of the healthcare systems in Canada and the United States is...

**Math**

The roof of a solar house is elevated by an angle of 50° at the front and by an angle of 40° at the back. Write an equation to determine the angle at the peak. Use <P. solve the equation

**Math**

I have a rope that is 3.6 meters long if I cut the rope into two pieces one piece is 1.925 meters long how long is the other piece of rope

**math**

Marcus wants to perdict the next student council president.He polls every fourth person from each grade level as they exit the cafeteria.In his poll, 65% chose Sophia.So, Marcus perdicts Sophia will win the election.what type of sample was taken

**Algebra**

A rectangles width is one half its length. If the diagonal equals 20 inches find the area

**biology**

Workout a cross between a homozygous tall pea plant with axial flower (TTAA) and a homozygous dwarf pea plant with terminal flower (ttaa) Note:(a)considering the table that provides and summarize the contrasting character of pea plant,(1)state the phenotype ratio of the F1 ...

**economics**

Is C what do you think non-profit means

**Math, Algebra (fast help would be nice)**

Strange that you can log in here and discuss things, but can't work up the smarts to use google. Just sayin' ...

**physics**

A 1100-kg elevator is lifted at a constant speed of 1.5 m/s through a height of 20 m. Part A How much work is done by the tension in the elevator cable? Express your answer to two significant figures and include appropriate units. Part B How much work is done by gravity?

**Chemistry**

How many moles of Fe(OH)2 will dissolve in 1.00L of water buffered at pH = 12.00? Fe(OH)2 has Ksp = 1.8 ÃƒÆ’Ã¢â‚¬â€ 10^-15. How would I do this? Should I make an ice table? I know the pOH = 2.00.

**algebra 1**

The Olivares family forgot to fill up the gasoline tank of their minivan at the beginning of a long trip. After driving 120 miles, there were 10 gallons remaining in the tank. If their car used fuel at the rate of 1 gallon every 20 miles, which equation describes the number of...

**Precal**

start with tan x = sin x/cos x That by the way is not only the start but the end of it :)

**urgent calculus help please **

A 20m long ladder is leaning against a wall. The top of the ladder is sliding down the wall at a constant speed of 2m/s. How quickly is the bottom of the ladder moving away from the wall when the bottom of the ladder is 5m from the wall? Give your answer as an exact expression.

**AP Physics 1**

run far, run fast.

**Calculus -math**

The Perfect Pizza Parlour estimates the average daily cost per pizza, in dollars, to be c(x)=0.00025x^2 +8x +10/x, where x is the number of pizzas made in a day. A) Determine the total cost at a production level of 50 pizzas a day B) Determine the production level that would ...

**english**

What is the meaning of sqrt?

**mechanics**

In English premier league football match between arsenal and Manchester city club in the 2015/2016 season at the emirate stadium,sagna throws a ball going right at 15m/s towards Yaya toure and hits his chest.if Yaya toure's body exerted a force of 30N to the left for 0.25s...

**mechanics**

A 1200kg fuel tank is cruising at 15m/s and doesn't notice that the 800kg car right in front of it slowed down to 10m/s.the truck runs into the car in a collision that last for 0.25s.the tanker is going at 12m/s after the collision find(a)what force did the car exert on ...

**Physics-Graivty**

Suppose planet earth suddenly grew in size, so that its radius was twice as large as before. Also suppose that at the same time, its mass also doubled to twice its former mass. If you weight used to be 700 N, what is it on this "new" Earth. Describe why this is the ...

**math**

Use logarithmic differentiation to find y ? for the following function. x^3 = e^?4y4?9y

**English**

What's the answer

**English**

YES it is correct thx

**philosophy-critical thinking**

Read statements (a) through (d) and identify any statement(s) that is irrelevant to the claim. (a) It is unfair to expect victims to bear the cost of someone else’s negligence. (b) Costs to victims arise as a result of the action of the drunk driver. (c) A policy of ...

**philosophy**

then should it be unacceptable by testimony?

**philosophy**

1.Only claims that can be objectively verified can be trusted. 2.Many people have reported encounters with ghosts. 1. unacceptable; problems in language 2. acceptable by testimony I just want to confirm if these answers are right.

**calculus **

Find the derivative of (3x+17)^13 (14x+6)^11x^-4/5 / (20x +3)^-9 using logarithmic differentiation. Assume x > 0.

**mechanics**

I don't understand

**mechanics**

A ball of mass 0.75kg moving horizontally at 5m/s strikes a vertical wall and rebounds with a speed of 2m/s.find (a)what is the impulse received by the ball?(b)calculate the coefficient of restitution(c)calculate the kinetic energy of the ball before and after collision.

**mechanics**

A ball of mass 0.75kg moving horizontally at 5m/s strikes a vertical wall and rebounds with a speed of 2m/s.find (a)what is the impulse received by the ball?(b)calculate the coefficient of restitution(c)calculate the kinetic energy of the ball before and after collision.

**physics**

A 6000kg truck travelling north at 5m/s collides with a 4000kg truck moving west at 15m/s,if the two trucks remain locked together after collision,find (a)with what speed and in what direction do they move immediately after collision?(b)what is the lost of kinetic energy of ...

**physics**

A ball is dropped from a height of 8m onto a horizontal floor and rebounds to a height of 12m.what is the coefficient of restitution between the ball and the floor?take g=10m/s^2

**math**

a new product is to be promote in the market. The sales in the first week is estimated to be 5000 unit with an increase of 1500 each week during the product's lifespan. Find the formulas for the number of sales, S(unit), in the nth week.

**philosphy**

1. It is highly conducive to the interests of the community that each individual should enjoy a liberty perfectly unlimited of expressing his sentiments. 2. Thus, to every man unbounded freedom of speech must always be, on the whole, advantageous to the state i need to state ...

**biology**

what are some complications of diabtetes mellitus?

**math**

a rectangle with dimension 30/7 m by 20/7 m is to be completely tiled with identical square tiles with no overlapping or cutting. Find the side length of the largest square tile which will accomplish the task.

**Algebra**

Find the solution set of 2?x = x - 3. A. {1, 9} B. {9} C. {1, -9} I got a quadratic and factored it as (x - 9)(x - 1). Then the solutions are x = 9 and x = 1. But the answer is supposed to be just 9. However, wouldn't x = 1 also work, if we do ?1 = -1?

**Maths**

Length of a cord is 71 1/2 it has been cut into 26 equal parts what is the length of each part?

**Dynamics**

The rod of the fixed hydraulic cylinder is moving to the left with a speed of 100 mm/s and this speed is momentarily increasing at a rate of 400 mm/s each second at the instant when sA = 425 mm. Determine the tension in the cord at that instant. The mass of slider B is 0.5 kg...

**Calculus**

How do you know the r is 2-y and not just y?

**Calculus**

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations y = 0.5x^2, y = 2, and x = 0 about the line y = 2. A. 8pi/15 B. 32pi/15 C. 64pi/15 D. 4pi/15 E. 16pi/15

**math**

x^2 = 4 x = +2 or -2

**Calculus**

The region enclosed by the graph of y = x^2 , the line x = 2, and the x-axis is revolved abut the y-axis. The volume of the solid generated is: A. 8pi B. 32pi/5 C. 16pi/3 D. 4pi 5. 8pi/3 I solved for x as ?y and set up this integral: 2pi * integral from 0 to 2 of y?y. But it ...

**PHYSICS**

Electrical force: Coulomb's law: F = kqQ / r^2 q = Q = 1.6*10^-19 Coulombs r = 5.9*10^-11 meters k = 8.99 x 10^9 N m^2 / C^2 Gravitational force: F = GmM /r^2 G = 6.67*10^-11 m = 9.1*10^-31 kg M = 1.67*10^-27 kg same r so it cancels when you do ratio Electricity wins :)

**Java**

Sorry, I meant I think it may be the first answer.

**Java**

"Assuming the necessary classes have been imported, which of the following statements will compile without error?" Object obj = new Calendar(); Calendar c = new Calendar(); GregorianCalender d = new Object(); Object e = new GregorianCalender(); I think it may be the ...

**Science, Physics**

zsasdsd

**Math**

A manufacturing company wants to minimize the cost of materials for a pop can which needs to hold 640 mL. Find the radius and height (in centimeters) of the cylindrical can with minimum surface area that holds this volume. Give your answer as a decimal number accurate to at ...

**math**

A microwaveable cup-of-soup package needs to be constructed in the shape of cylinder to hold 550 cubic centimeters of soup. The sides and bottom of the container will be made of syrofoam costing 0.03 cents per square centimeter. The top will be made of glued paper, costing 0....

**Math - Quadratic Equations**

Last one At present, Mark's age is x^2 years and Peter's age is x years. When mark is 10x years, Peter will be 3x years. What are their present ages? Question is kind of confusing to me, so again i just need help forming the equation. Thanks.

**Math - Quadratic Equations**

The base of a triangle is 6 cm longer than its height. If the area of the triangle is 140cm^2, what is the length of the base? Im just confused on how the equation should be formed. Thanks.

**math**

The height of a person above the ground on a Ferris wheel is given by the function h(t)=9 sin {pi/20 (t- pi/2))+ 12 where h(t) is the height in meters of person t seconds after getting on a) how long does it take the Ferris wheel to make one complete revolution b)what is the ...

**Math - Quadratic Equations**

Two consecutive even numbers have a product of 288. What are the numbers? The answer I got through trial and error was 18 and 16. Is there a way for me to form the question into an equation and work that out to find the answer, instead of just guessing numbers? Thanks.

**math**

Sasa, June and Don are waitresses. When they compare their tips at the end of their shift they notice that Juice earned 30c for every 40c that Sandy earned while Juice earned 20c for every 25c that Dido earned. How much would Dido earn if Sandy earns $36?

**Science unit 9**

What would you do to measure the volume of a baseball

**Geometry**

Given: ABCD is a parallelogram m?A = 60º ; BK ?AD AK = KD; Perimeter of ABCD = 24 Find: BD. So I have this question it has been giving head aches and I am vary tired of doing, can you post the answer and the solution my class is starting in 2 hours, and it would be a vary...

**Math**

I'm sorry I messed up I meant will it become greater or smaller

**Math**

If the decimal in the number 4157.98 is moved one place to the right the number will become-

**Math**

If the decimal in the number 4157.98 is moved one place to the right the number will become-

**History**

What were some advantages of using rifles as a weapon in WW1? I only got some down, but I need at least 3-5 more. Can fire many rounds in a minute, easy to bring and are lighter weight than most weapons, good portability, good range of up to 1400 meters

**gerund**

Is drinking the direct object So fixing is PN?

**gerund**

fixing is a d.o drinking is pn?

**Social science **

Most major cities in core countries are postindustrial. Can you think of an example of a growing city that is still in its industrial phase? How is it different from most Canadian cities?

**History/English**

Oh okay. The reason I made that my slogan is because my project is about advertising a weapon that is good for WW1, so I chose rifles. Would that be okay?

**History/English**

I am trying to make a slogan for a project I have. Is this correct grammar? Rifles are a man's best friend

**gerund help**

thank you so muchh! i didn't even think of that word! thank you again

**english**

Part A In January what does the speaker mean by the image in the following lines? (1point) The sun a spark Hung thin between The dark and dark. A. The sun barely shows behind the dark clouds. B. The sun sends off thin sparks in the night. C. The sun appears for only a short ...

**Ethics**

it is describing socialism because its not free not everything comes free?

**Ethics**

dean harris

**Ethics**

It is ethics of health care

**Ethics**

The traditional view of medical ethics is that a physician has a duty to his or her individual patient, rather than to society as a whole. Under that view, a physician should not deny a potentially beneficial treatment for one patient, in order to save costs or conserve ...

**Calculus**

minimum area

**social studies**

Anybody have the answers for the full unit test? please help need to check answers FAST

**Science**

The sun's apparent motion across the sky from East to West daily is due to the A) rotation of the sun. B) rotation of the earth. C) orbit of the earth around the sun. D) orbit of the sun around the earth. I think the answer would be c.

**Language arts**

he is right though ^

**math**

a diamond weighing 2.5 carats was cut into two pieces. The two pieces were put on a balance scale, one on each side. An additional weight of 0.9 carats on one side was required to maintain balance. Find the weight, in carats, of the larger piece

**science **

A man walk 3km East and 4km North what is his resultant displacement? Suppose he walks 3km and 4km 60 degree North of East. What is the displacement?

**Decroly**

If n represents the amount of songs stored on an MP3 player , analyze the meaning of the expressions n + 7, n - 2 , 4 n and n \2

**math**

It took Joe 3 hours swimming at a speed of 12 miles per hour to swim along the Charles River. If Jennifer is swimming the same path along the Charles River at a speed of 9 miles per hour, how long will it take her to complete her swim?

**math**

Owen and Ethan have $175 together. How much money does each of them have if Ethan has $33 more than Owen?