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Total # Posts: 1,457

Algebra
how to tell the difference between a negative number raised to a power and the opposite of a positive number raised to a power. Use examples in your explanation.

Essay
The supporting details

math
1-1/square root 3

math
I don't understand this question. I am suppose to be simplifying this: u^4-1/u^3-1 I put (u^2+1) (u+1)(u-1) for the top but the bottom, I can't figure out why my book put (u^2+u+1)(u-1) when it's only u^3...where did the extra u come from?

statistics
Which hypothesis-testing procedure would you use in the following situations? • The mean time an American family lives in a particular single-family dwelling is 11.8 years. A sample of 100 families in the Sycamore, OK area shows the mean time living in a single family ...

Calculus
factor fully: x^3 + x^2 - 7x + 2 give n that x=2 is a root

Politics
In Gandhi's account, the person practicing civil disobedience: Openly and civilly breaks an unjust law and quietly suffers the resulting penalty. Must refuse compliance with all of that society's laws for the sake of consistency. Is justified in retaliating against the...

child development
I understand...This lesson is just kicking my butt

child development
Oh okay sorry I just found this side and it is the first time using it but thanks for your help

child development
When both parents believe that men are capable of nurturing infants a. mothers devote time to caregiving b. fathers devote less time to caregiving c. fathers devote more time to caregiving d. the marital relationship tends to suffer, particulary when me spend little time in ...

math
what is the derivative of y=ln(x/4)

Identifying a Fallacies
I can't seem to figure out which fallcy this would be, is anyone familiar and could tell me which one for the following statement? 'To parents who think it's a good idea to share parenting, I say, "OK then, let the child stay in the house and you two swap ...

Critical Thinking
What kind of rhectorical or fallaci is this statement When religious conservatives enact laws to enforce the idea that their God abhors suicide, they threaten the central principle on which America was founded

URGENT Spanish help please.
thank you!

URGENT Spanish help please.
ok in the example it shows: ¿Comprendes espanol? Si, lo comprende ok for this question it's asking 1) do you and your siblings practice tennis my response: no, no los practicamos.. it said i was wrong how would I correct that 2) it asked does your mother teach ...

Trig
Solve the equation 2sin(2x) = cos x. and Solve the equation cos^2(2x)–sin^2(2x)= (√3 / 2).

Trig
Use the half-angle formulas to come up with an exact expression for each function value below. You do not have to simplify your answers. cos(pi/16)

trig
prove: cot^2(x)=cos(x)/(sinx)(tanx)

Derivatives
differentiate and simplify y= (e^x - 1) / x^2

math
I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^...

math-check
I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^...

American Literature
Describe the political role of the poetry of the 1950s? can anyone give a few pointers on this, thanks!

trig
Solve for theta, giving a general formula for all of the solution: tan(theta)=-1 sin(theta/2)=1/2

Trig
4sin^(2)x-3=0

physics
I got frequency: 2pi/√ 2 Period: √2/2pi

physics
What is the period and frequency of a 10-pound weight oscillating (as a pendulum) on a 5-meter-long rope?

physics
consider the following: A point on the tip of a tuning fork vibrates in harmonic motion described by the equation d=10sin(ωt). 1. ω for a tuning fork that has a frequency of 535 vibrations per second. (I don't understand this question) 2. How many cycles does the...

trig
Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help

trig
Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help

physics
A buoy oscillates in simple harmonic motion according to the motion of waves at sea. An observer notes that the buoy moves a total of 6 feet from its lowest point to its highest point. The buoy returns to its highest point every 15 seconds. Amplitude: 6 feet Period: ??? ...

physics
How do I find omega (ω)?

physics
Would I use cosine or sine?

physics
A buoy oscillates in simple harmonic motion according to the motion of waves at sea. An observer notes that the buoy moves a total of 6 feet from its lowest point to its highest point. The buoy returns to its highest point every 15 seconds. Amplitude: 6 feet Period: ??? ...

chemisrty
The molar heat capacity of silver is 25.35j/mol C . How much energy would it take to raise the temperature of 9.30 grams of silver by 12.0 C?

chemistry
when I work this out I get 5.7 g but it is saying that my answer is incorrect and I am not sure what I am doing wrong..

chemistry
A 32.2 g iron rod, initially at 22.3 C, is submerged into an unknown mass of water at 63.9 C, in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 58.6 C. What is the mass of the water?

physics!!!
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530 at a wavelength of 410 nm (violet). If both wavelengths are incident on a slab of crown glass at the same angle of incidence, 1.1°, what is the angle ...

Ms.Sue
MsSue can you give me a general analysis of what Kalamazoo Poverty Reduction Initiative is about and how they're beneficial. I've read the site and not comprehending it.

American Literature
Hey! Can anyone give a good suggestion on a research topic.

Ms.Sue
I've changed my persuasive topic from Water cons. to Poverty in Kalamazoo. Do you know of any organizations that help the poverty in Kalamazoo? So far I've only found Loaves and Fishes.

Calculus
Q. Find the minimum value of Q=x^2y subject to the constraint 2x^2+4xy=294. Its the derivative method.

help!
Are ways to prevent oil leakage in Kalamazoo?

MsSue Please
well it's a speech not writing

MsSue Please
I'm the guy doing the persuasive speak on the Oil leakage in the Kalamazoo river. I can see you're from/know of this area. Can you give me some pointers/idea's of what I could talk about/include in my persuasive speech. I've been doing a little reading of how ...

calculus
The efficiency of an internal combustion engine is given by E= (1-v/V)^0.4 Where V and v are the respective maximum and minimum volumes of air in each cylinder. a) Show that ∂E/ ∂V > 0 and interpret your result b) Show that ∂E/ ∂v < 0 and ...

Math ?
If p is a positive  integer and is greater than 3. How many prime integers are there in 3p including 1 and 3p

Math ?
If p is a positive  integer and is greater than 3. How many prime integers are there in 3p including 1 and 3p

MsSue
you helped me last week on finding a persuasive topic for on issues of Kalamazoo. I chose Water Conservation.. Do you know any handy news articles that would be of help that are 2009 and greater? Thanks In Advance

geometry
h = 16, k = 4, a = 4.) k = 3, a = 9, h = __________ 5.) a = , h = 5, k = ___________ 6.) h = 4, k = 1, n = ___________ 7.) h = 9, k = 6, m = ___________ 8.) n = , h = 5, p = ____________, k = __________

American Literature
Would you describe Langston Hughes’s poetry as modernist in its themes, use of images, and style? Refer to specific examples from Hughes’s poetry to support your answer.

American Literature
Explain the meaning of one example of Cather's use of animals to describe human behavior.

American Literature
What is significant about the novel's title, My Antonia?

voc 8
is it teacher

Geometry
isaac is landscaping a yard , to see how well a tree shades are area of the yard. He needs to know the trees height . The trees shadow is 18 feet long at the same time isaacs shadow is 4 feet long if isaacs is 6 feet tall how tall is the tree

Trig
Please help. I can't get this problem at all. When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing through the centers of the bubble. Also, angles ACB and ACD are 60 degrees. Show that the radius r of ...

math
Suppose the space needle in seattle washington casts a 220 ft shadow at the same time a nearby tourist cast a 2- foot shadow if the tourist is 5.5 feet tall how tall is the space needle

Calculus
A sporting goods store sells 100 pool tables per year. It costs $20 to store one pool table for a year, based on the average inventory on hand. It costs $40 for each delivery of pool tables. How many times per year and in what lot size should the store order pool tables to ...

Persuasive topics.
What are some issues in Kalamazoo, Michigan that I can do a persuasive speech on. Issues that are 2010 or greater?

Physics!!!
A 24-V battery is connected in series with a resistor and an inductor, with R = 5.6 Ω and L = 2.0 H, respectively. (a) Find the energy stored in the inductor when the current reaches its maximum value. (b) Find the energy stored in the inductor one time constant after the...

Chemistry
A solution is prepared by adding 50ml of .05 M HCl to 150 ml of .10 M HNO3. Calculate the concentrations of all species in this solution.

math
Complete the table for this question y=-1/2x+3 the table is x y 0 -2 -4 2 0

PHYS›CS
At the end of the spring term, a high school physics class celebrates by shooting a bundle of exam papers into the town landfill with a homemade catapult. They aim for a point that is 31.1 m away and at the same height from which the catapult releases the bundle. The initial ...

physics
A uniform ladder 10.0 m long is leaning against a frictionless wall at an angle of 60.0° above the horizontal. The weight of the ladder is 18.4 lb. A 60.8-lb boy climbs 4.18 m up the ladder. What is the magnitude of the frictional force exerted on the ladder by the floor?

American Literature
According to Langston Hughes in "The Negro Artist and the Racial Mountain, what is the "mountain standing in the way of any true Negro art in America"?

physics!!!
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest . The belt is a 215-turn coil. When the patient inhales, the area encircled by the coil increases by 41.0 cm2. The magnitude of Earth's magnetic field is 50.0 µT and ...

Chemistry
I got it, thanks!

Chemistry
An atmospheric scientist interested in how NO is converted into NO2 in urban atmospheres carries out two experiments to measure the rate of this reaction. The data are tabulated below. A: [NO]0 = 9.63 × 10-3 M, [O2]0 = 4.1 × 10-4 M t(s) 0/3.0/6.0/9.0/12.0 [O2] 4.1/...

Calculus
Find an equation (in terms of x and y) of the tangent line to the curve r=3sin(5theta) at theta=pi/3

Calculus
Thank you!

Calculus
Sand is poured onto a level piece of ground at the rate of 0.25 m^3/min and forms a conical pile whose height is equal to its base diameter. How fast is the height increasing at the instant when the height is 0.50 m? V = 1/3(pi)(r^2)h I got 3/pie, is that correct?

American Literature
Based on "To Whistler, American," how does Pound view the role of American art and literature?

American Literature
least published, like whose work wasn't published that much, or didn't write that much compared to the others.

American Literature
Of Fitzgerald, Hemingway, Pound, and Stein, who was the least published writer? I have no clue about it

Politics
no, i think it is false

Politics
true

Politics
At the national level, America is best described as having a direct democracy system of government. True or false

Politics
Q. The words “wall of separation between church and state” appear in the Constitution. a. true b. false

math
thanks guys!

math
solve for x: -3x^2+6x-3=0

Algebra 2
log100^x

PreCalculas
Can someone tell me what the graph of r=cos (5/2 x angle) should look like?

physics!!!
Two capacitors, C1 = 27.0 µF and C2 = 35.0 µF, are connected in series, and a 21.0 V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this equivalent capacitor. equivalent capacitance= µF total energy stored...

math
Kelly opened a savings account with $500 she received at 8th grade graduation four years ago. The account pays 2.5 percent compounded daily. How much should be in the account now?

math
How much money would you have in a savings account at the end of one year, if you saved $1000 at two percent interest compounded quarterly? Round to the nearest dollar

math
Michelle put $2000 in a savings account at 1.75 percent interest. She kept it there for eight years. How much interest did she earn?

math
Orlando has a bank statement balance of $414.25 and $5.90 service charge. His check register shows $374.16 and he has two outstanding checks of $26.54 and $21.78. What is his true balance?

Chemistry
This is what I did: moles of H2O = 3.88 delta H rxn = -2044.02 (3.88 moles)(6.01 kJ/mol) = 23.359 kJ (3.88 moles)(75.291 J/mol/C) = 29.263 kJ 23.359kJ + 29.2636 kJ = 29.286 kJ (44 g of C3H8)(29.286kJ/-2044.02kJ) = 0.6304 g But I think I did something wrong??

Chemistry
How many grams of propane must be burned to provide the heat needed to melt a 70.0-g piece of ice...? How many grams of propane must be burned to provide the heat needed to melt a 70.0-g piece of ice (at its melting point) and bring the resulting water to a boil (with no ...

Chemistry
Thanks

Chemistry
Knowing that delta Hvap for water is 40.7 kJ/mol, calculate Pvap of water at 46 C

math
Bart had an income of $38,250 last year. If the inflation rate is 4.5%, what is his purchasing power?

math
If your annual income from a part-time job is $4523, and the inflation rate is 6 percent, what is the purchasing power of your income?

math
Let C = 2.32 N + 34180 represent the cost (C) of raising a child to 18 years of age, on an income (N). If the cost is $120,000, what is the income?(

math
You spend $685 a month on living expenses. If your monthly income is $1500, what percent of your income do you spend on living expenses?

math
Una makes $64 a week, plus 15 percent of the cost of meals that she serves. Use the equation, y = 0.15x + 64, to predict what she makes in a week when she serves $355 worth of meals

civics
@writeacher ...i'm still confused.

civics
Which is NOT a responsibility of the Department of Agriculture? 1. The opening of foreign markets to U.S. agricultural products 2. To oversee federal anti-hunger programs 3. The designation of lands for private and public use =4. Support for farmers with agricultural research

Civics
Which is NOT a responsibility of the Department of Agriculture? 1. The opening of foreign markets to U.S. agricultural products 2. To oversee federal anti-hunger programs =3. The designation of lands for private and public use 4. Support for farmers with agricultural research

Physics!!!
The electric field everywhere on the surface of a charged sphere of radius 0.260 m has a magnitude of 545 N/C and points radially outward from the center of the sphere. (a) What is the net charge on the sphere?

Physics!!!
The electric field everywhere on the surface of a charged sphere of radius 0.260 m has a magnitude of 545 N/C and points radially outward from the center of the sphere. (a) What is the net charge on the sphere?

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