Tuesday
September 2, 2014

Posts by anonymous


Total # Posts: 70,004

Math
1.Which explains why the sequence 216, 12, 2/3 is arithmetic or geometric? A.The sequence is geometric because it decreases by a factor of 6. B.The sequence is arithmetic because it decreases by a factor of 6 C.The sequence is geometric because it decreases by a factor of 1/18...
April 25, 2014

Geometery help
Well, you move 5 units right and 5 units up. So, move five units up from (4,5), which is (4,10).
April 25, 2014

math
a person was climbing on a building. He slips 1 m for every 5 metre he climbs up. If the building is 53 m high and he takes 5 seconds to climb 1 metre find the total time taken by him to get on the top of the building.
April 25, 2014

math
represent an equivalent fraction to 3/4 as 1)a fraction and 2)a picture
April 25, 2014

environmental science
What are some of The Blue Plains Water Advanced Wastewater Treatment Plant standards of
April 25, 2014

trignometry
Tan4x=4tanx(1-tan^x)/1-6tan^x+tan^^x ,prove
April 25, 2014

Algebra
When a polynomial is divided by x+3, the quotient is x^3+x^2-4 and the remainder is 8. Find the dividend?
April 24, 2014

Algebra
(√(2m)^-3)/(m^-1)
April 24, 2014

Algebra
When a polynomial is divided by x+3, the quotient is x^3+x^2-4 and the remainder is 8. Find the dividend?
April 24, 2014

Calculus Help Please Urgent!!!
At time t=0, an astronaut stands on a platform 3 meters above the moon's surface and throws a rock directly upward with an initial velocity of 32 m/sec. if the acceleration due to gravity is 1.6 m/sec^2. a) find the equations of motion for the throwing of this rock. b) how...
April 24, 2014

chemistry
13. A student mixes 100.0 mL of 0.500 M AgNO3 with 100.0 mL of 0.500 M CaCl2. (8 points) a. Write the balanced molecular equation for the reaction. b. Write the net I onic equation for the reaction. c. How many grams of precipitate will form? d. What is the concentration of Ag...
April 24, 2014

Algebra
Find the constant c such that the denominator divides evenly into the numerator. (x^4 - 3x^2 + c)/( x+6)
April 24, 2014

Algebra
(√5a^-2)/(√10a^-1)
April 24, 2014

Music
So, I have to split a song into its form, like ABAA, ABBA, and so on. I need help with doing that to the song "Wake Me Up" by Avicii. I get confused whenever I try to. Please help me?
April 24, 2014

Math
360(degrees in a circle) 40(given) so 360/40=9 Multiply that by two(because theres two pizzas) so 18 people.
April 24, 2014

Math - Answer Check
Jeff hiked 2/3 distance from Lookout Point to Eagle Station then stopped for lunch. How far had he hiked? Lookout Point to Eagle Station: 2 1/10 I got 1 13/30 but it's not an answer choice.
April 24, 2014

Grammar
There are no such things as unicorns or ghosts. There are no such things as unicorns nor ghosts. Which sentence is correct?
April 24, 2014

Math
Thanks! I get it completely now :).
April 24, 2014

Math
How did √(3f^3) become f√(3f)? That's the part I'm confused about.
April 24, 2014

Math
How to simplify? (√3)/(√f^-3)
April 24, 2014

science
The link works for me. Anyway, if it does actually lead you to the homepage, then just search about the formation of the Andes Mountains on your own.
April 24, 2014

Algebra
How did you get the 1/(f√f)?
April 24, 2014

Algebra
How to simplify? (√3)/(√f^-3)
April 24, 2014

Chemistry
How many grams of sodium acetate, NaC2H3O2, would have to be added to 5.00 L of 0.65 M acetic acid (pKa 4.74) to make the solution a buffer for pH 4.00?
April 24, 2014

math
how do you make a coordinate plane for the function of a person who weighs 130 pounds that burns 300 calories in 1 hour,600 calories in 2 hours,900 calories in 3 hours and 1200 calories in 4 hours
April 24, 2014

Algebra
That's okay, I figured it out.
April 24, 2014

Algebra
How to simplify: sqrt(3x^3)/(64x^2) The whole thing is under the radical.
April 24, 2014

algebra
What is the y-intercept for line A, considering these answers (0,1/2),(1/2,0), (0,-1) and (-1,0).
April 24, 2014

algebra
What is the slope of line A if the answers are -2, 1/2, -1/2 and 2.
April 24, 2014

Algebra ll
thank you, Steve :)
April 24, 2014

Physics
A certain planet is located 3.54 x 10^11 m from its sun. If its orbital period is 4.9 x 10^7 s, find the mass of its sun.
April 24, 2014

math problem
what is 4/5 of 230
April 24, 2014

math
transversal
April 24, 2014

Chemistry
What is the azimuthal quantum number (also called the angular-momentum quantum number), ℓ, for the orbital shown here? (the photo is a d orbital. it has 4 balls around it) Express your answer numerically as an integer.
April 24, 2014

science
Birds share many different characteristics. List three of these.
April 24, 2014

Chemistry
An astrophysicist working at an observatory is interested in finding clouds of hydrogen in the galaxy. Usually hydrogen is detected by looking for the Balmer series of spectral lines in the visible spectrum. Unfortunately, the instrument that detects hydrogen emission spectra ...
April 24, 2014

Chemistry
6.626 x 10^-34/ m x 1.26 times 10^5 what is plugged in for the mass if it is not given?
April 24, 2014

Chemistry
What is the de Broglie wavelength of an electron traveling at 1.26×105m/s ?
April 24, 2014

trig
16cos(x)-3sec(x)=0 Find all solutions for x in [0, 2pi)
April 23, 2014

math
Kyle reduced his investment in Collins Company from $11,700 to $4,300. What was the percentage rate of decrease?
April 23, 2014

Math
A rectangular backyard measures 15 meters by 20 meters.there is a square flower bed in the middle of the yard with three sides of 3 meters.what is the area of the yard only?
April 23, 2014

Algebra
7(√6/32) I did: 7(√6/32) * (√32/√32) 7(√192/32) ...but then what?
April 23, 2014

Math
A sidewalk borders a rectangular play area.the play area measures 20ft by14ft.the width of the sidewalk is 2 ft.what is the perimeter of the outside borders of the sidewalk?
April 23, 2014

Biology help
How does a gene determine a trait?
April 23, 2014

Math
(6/7c)^2 Is this 6/7c^2?
April 23, 2014

Algebra
I multiplied (√6/√32) by (√32/√32).
April 23, 2014

Algebra
7(√6/32) I came until 7(√192/32). How do I proceed from here?
April 23, 2014

algebra
(12*50) + (16*50) = ?
April 23, 2014

algebra
Gabby walks 12 blocks east from school and then 16 blocks south and each block is 50 yards how far is Gabby from school in yards?
April 23, 2014

math
1third * 1 hafl
April 23, 2014

Math 70
At a county fair, an adult ticket sold for $6.00, a senior citizen’s ticket for $4.50, and a child’s ticket for $2.00. On Friday, the number of adults and senior citizen’s tickets sold was 5 more than the number of children’s tickets sold. The number of ...
April 23, 2014

Physics
A golf ball, mass 0.048 kg, rests on a tee. It is struck by a golf club with an effective mass of 0.225 kg and a speed of 44 m/s. Assuming the collision is elastic, find the speed of the ball when it leaves the tee (remember: you can not assume the club is at rest after the ...
April 23, 2014

physics
Assume that the dots in the painting are separated by 1.0 mm and that the wavelength of the light is vacuum= 500 nm. Find the distance at which the dots can just be resolved by (a) the eye and (b) the camera. I know that the resolving equation is (angle)min = 1.22(wavelength...
April 23, 2014

Algebra
(-1/3)√18c^5 * (-6√8c^9) 2√144c^14 ---> I came until here but then didn't know how to proceed.
April 23, 2014

Science
We just learned about mitosis and my teacher is giving a test over it and other things tomorrow. We have to write the mitosis steps in order, label the chomatids, nuclear membrane, spindle fibers, and centrioles, and have a sentence describing them. How could I remember this?
April 23, 2014

calculus help for Steve
When I put your answer into WebAssign it marked as wrong so are you sure this is the right answer?
April 23, 2014

calculus help
A particle is moving with the given data. Find the position of the particle. a(t)= (t^2 - 5t +7) , s(0)=0 , s(1)=20 Thanks!
April 23, 2014

biology
GCCATGTT GCGTACTT C --> G A --> T T --> A G --> C all of these are transversion (pyrimidine changing to purine)
April 23, 2014

science
A bat moving at 5.6 m/s is chasing a flying insect. The bat emits a 60 kHz chirp and receives back an echo at 60.63 kHz. At what speed is the bat gaining on its prey? Take the speed of sound in air to be 338 m/s. Answer in units of m/s
April 23, 2014

Math
(-1/3)√18c^5 * (-6√8c^9) 2√144c^14 ---> I came until here but then didn't know how to proceed.
April 23, 2014

geometry
A satellite launch rocket has a cylindrical fuel tank. The fuel tank can hold V cubic meters of fuel. If the tank measures d meters across, what is the height of the tank in meters?
April 23, 2014

Algebra Work Check
Thanks!
April 23, 2014

Algebra Work Check
The problems are 5√6 * (1/6)√216 and -9√28a^2 * (1/3)√63a. Actually, I checked my final answers, but I just wanted to make sure that my process is correct.
April 23, 2014

Algebra Work Check
1. 5√6 * 1/6√216 5/6 * √1296 5/6 * √144 * √9 = 30 2. -9√28a^2 * 1/3√63a -3√1764a^3 -3√49a^2 * √36a -3*7a*6√a = -126a√a
April 23, 2014

Language Arts
1 and 2 : I don't see anything missing. 3. Correct 4. Wrong 5. None of those choices is correct. There should be additional commas after each state.
April 23, 2014

accounting
If you can earn 4 percent, how much will you have to save each year if you want to retire in 35 years with $ 1 million?
April 23, 2014

science 1 question
Force = mass X acceleration
April 23, 2014

physics
In Figure 20.2 is a velocity selector that can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of the instrument. A parallel plate capacitor sets up an electric field E which is oriented perpendicular to a uniform magnetic ...
April 23, 2014

chemistry
Lactic acid, CH 3 CHOHCO 2 H, is found in sour milk, in sauerkraut, and in muscles after activity. K a for lactic acid = 1.4 x 10 -4 . a. If 2.75 g of NaCH 3 CHOHCO 2 , sodium lactate, is added to 5.00 x 10 2 mL of 0.100 M lactic acid, what is the pH of the resulting buffer ...
April 23, 2014

Math
The answer key says -126√a.
April 23, 2014

Math
Simplify the product. -9 sqrt 28a^2 * 1/3 sqrt 63a I came until -3 sqrt 49a^2 * sqrt 36a, but then I got confused...
April 23, 2014

chemistry
I got [H+]= 0.14M and for [HC2O4]=0.14M and [C2O4^=] 5.1x10^-5 Is this correct?
April 22, 2014

chemistry
what is the hydronium ion concentration of a 0.35M oxalic acid, H2C2O4. solution? for oxalic acid, ka1= 5.6x10^-2 and ka2=5.1x10^-5. Identify and calculate the concentrations for the representative species in solution.
April 22, 2014

chemistry
K is not given.
April 22, 2014

chemistry
consider the following equilibrium. 4NH3(g) +3O2(g)<-> 2N2(g) + 6H2O(g) suppose 0.30mol of NH3 and 0.40mol of oxygen are added to a 5.0L container. If x mol of water is present at equilibrium, what is the equilibrium concentration of oxygen?
April 22, 2014

chemistry
thank you for the walk through.Very helpful.
April 22, 2014

chemistry
Dinitrogen tetroxide decomposes to form nitrogen dioxide in a second order reaction: N2O4(g)-> 2NO2(g) At 400K, the rate constant for this reaction has been measured to be 2.9x10^8 L/mol*s.suppose 0.222 mol of N2O4(g) is placed in a sealed 41.7L container at 400K and ...
April 22, 2014

chemistry
what is the mass percent of an aqueous sodium hydroxide solution in which the molarity of NaOH is 4.37M? the density of the solution is 1.1655 g/mL.
April 22, 2014

chemistry
volume=1.442x10^-8cm 4atoms per cell so, 4x (1/6.022x10^23) x 196.97g = 1.31x10^-21 g of gold cell volume=(1.442x10^-8cm)^3= 2.99x10^-24 density=(1.31x10^-21)/(3.0x10^-24)=438g/cm^3
April 22, 2014

chemistry
the metal gold, with an atomic radius of 144.2pm crystallizes in a face-centered cubic lattice. what is the density of gold?
April 22, 2014

chemistry
thanks!
April 22, 2014

chemistry
the autoionization of water, as represented by the equation below, is known to be endothermic. What can be correctly said of what occurs as the temperature of water is raised?(please explain) H2O(l)+H2O(l)<->H3O+(aq) + OH-(aq)
April 22, 2014

chemistry
which of the following solutes, dissolved in 1kg of water, would be expected to provide the fewest particles and to freeze at the highest temperature? (NH4)2SO4 , CaCl2, and/or NaCl.
April 22, 2014

chemistry
What will happen if 50mL of 0.022M Na2S2O3, 50mL of 0.010M AgNO3, and 50mL of 0.097M KCl are mixed together? For AgCl, ksp=1.8x10^-10 ; for Ag(S2O3)2^3-, Kf= 2.9 x 10^13.
April 22, 2014

physics
First start with an isothermal expansion at 2.0 atm from 1.0 L to 4.0 L. If this now is adiabatically compressed back to its original volume, what is the change in internal energy here? Also what are some examples of these processes
April 22, 2014

physics 1
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 5.6 x 1028 kg and 1.5 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would...
April 22, 2014

physics
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. The translational speed of the ball is 4.43 m/s at the bottom of the rise. ...
April 22, 2014

physics
Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 4.44 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.00 kg and r1 = 1.00 m, (2) m2 = 4.50 kg and r2 = 7.10 m, (3) m3 = 3.60 ...
April 22, 2014

English help
From the words below, supply the words needed to complete the sentences. Chronic, clairvoyance, inadvertent, pretentious, celestial, vanguard. A. John had a CHRONIC back pain that left him bedridden. He refused, however, to visit the doctor because of the PRETENTIOUS way the ...
April 22, 2014

English help
From the words below, supply the words needed to complete the sentences. Vicariously, vicissitudes, tawdry, ponderous, sycophant, implausible. A. One might say that Tennessee Williams lived VICARIOUSLY through the character of brick in his play cat on a hot tin roof. Big daddy...
April 22, 2014

calculus help
find the position function s(t) given acceleration a(t)=3t, if v(2)=0, and s(2)=1. the answer is s(t)=(t^3/2)-6t +9 but I don't know how to solve this. Can someone help me with this? Thank you!
April 22, 2014

Physic
hhkhk
April 22, 2014

Physic
A bullet strikes a ballistic pendulum whose target block has a mass of 4kg. The block is observed to rise a distance of 3cm, and the bullet is weighed and found to have a mass of 20g. What is the speed of the bullet when it strikes the block? (Answer: 154m/s) Please show all ...
April 22, 2014

Pre-Cal
the 4 is supposed to be 8, but im trying to find the amplitude, midline, and period. Sorry forgot to put that.
April 22, 2014

Pre-Cal
2y=cos(4(t-6))+6
April 22, 2014

Math
Luke rode his bicycle 2/5 of a mile from his house to the library.He then rode 1/2 of a mile from the library to the mall.Sketch a visual model to find the total distance that Luke rode.
April 22, 2014

health
how is cardiac muscle similar to smooth muscle a. both are striated b.they share no similarities c. they share no differences d. both have one central nucleus
April 22, 2014

Language arts verbs
Aaron plans to attend college once he completes this course workbook
April 22, 2014

health
what is the primary function of the skeletal muscle a. protecting the body from harm b. heating the body c. contraction d. pumping blood to the rest of the body
April 22, 2014

physics 1
A person who weighs 869 N is riding a 98-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally by the two tires. If the gauge pressure in each tire is 7.80 x 105 Pa, what is the area of contact between each tire and the ground?
April 22, 2014

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