Tuesday

September 2, 2014

September 2, 2014

Total # Posts: 70,043

**chemistry**

how many grams of HCL is needed to produce 200 grams of hydrogen?
*April 26, 2014*

**Science**

7.D 8.C
*April 26, 2014*

**Science**

my answers: 1.A 2.C 3.D 4.B 5.B 6.A 7.DC 8.
*April 26, 2014*

**Science**

1. If the net force on an object is O N, the forces are considered unbalanced true false 2. Most people in the united states use feet and miles to measure distance in their everyday lives. why do scientist in the United States use meters to measure distance? Meters allow ...
*April 26, 2014*

**Math **

I'm extemely lost at some point, how do you solve this equation by using the inverse of the coefficient matrix and by echelon method -x-8y=12 3x+24y=-36
*April 26, 2014*

**Language arts**

If you had to write a creative story what would it be about?
*April 26, 2014*

**finance**

If the average new home costs $ 275,000 today, how much will it cost in 10 years if the price increases by 5 percent each year?
*April 26, 2014*

**Math**

3.14x8=your answer Pie times the radius
*April 26, 2014*

**science**

Why are there usually more producer in an ecosystem than consumers? a). There is less energy available to the consumers. b). There is more energy available to the consumers. My answer is ( a ).
*April 26, 2014*

**physics**

A stone is dropped from the deck of the bridge. The sound of the splash reaches the deck 3 seconds later. If sound travels at 342 m/s in still air, how high is the deck of bridge above the water?
*April 26, 2014*

**Math**

(2 + sqrt 2)/(2 - sqrt 2) = (x)/(3 + sqrt 10) How to solve for x?
*April 26, 2014*

**Math**

Thanks, but can you please verify how you got the (2√5 + 5)? Because I thought that √5 * (2+√5) would be 2√25.
*April 25, 2014*

**Math**

(sqrt 5)/(2 - sqrt 5)
*April 25, 2014*

**chemistry urgent! **

what is the net ionic for these following balanced equations: 2(NH4)3PO4(aq) + 3Ba(OH)2(aq) -> Ba(PO4)2(s) + 6H2O(l) + 6NH3(g) 2HNO3(aq) + K2CO3(aq) -> H2O(l) + CO2(g) +2KNO3 NaF(aq) + HCl(aq) -> NaCl(aq) + HF(aq)
*April 25, 2014*

**Algebra 1**

Yes.
*April 25, 2014*

**business math**

On May 1, Emerson Fast bought 10 Manitoba On May 1, Emerson Fast bought 10 Manitoba Polar bonds with a coupon rate of 7.875%. The purchase price was $101. 375, and the commission was $8 per bond. Manitoba Polar bonds pay interest on April 1 and October 1. Polar bonds with a ...
*April 25, 2014*

**Algebra**

The formula.
*April 25, 2014*

**Algebra**

That's exactly what it said in the textbook.
*April 25, 2014*

**Algebra**

The equation r = (sqrt A)/(pi) gives the radius r of circle with area A. What is the radius of a circle with the given area? Write your answer as a simplified radical and as a decimal rounded to the nearest hundredth. a. 50 ft^2
*April 25, 2014*

**calculus help**

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. -1. a(...
*April 25, 2014*

**Math**

Please Help!!
*April 25, 2014*

**Math**

It doesn't make sense!!!
*April 25, 2014*

**Math**

I did 175.2 multiplied by 0.7134 then I rounded to get 125. So I dont get how to get the answer!!!
*April 25, 2014*

**Math**

During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M=176-0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per minute of 125? A.52 ...
*April 25, 2014*

**Math**

Solve the equation and write the answer in simplified radical form. n^2 - 2n + 1 = 5
*April 25, 2014*

**Math**

(16a)/(sqrt 6a^3)
*April 25, 2014*

**Math**

M=11*
*April 25, 2014*

**Math**

Find the value of the variables in the table: X= n, 4, 6, 10, 12. Y= 1, 9, m, 21, 25 n=0 Y=11?
*April 25, 2014*

**Algebra**

Can you explain how we do that? Also, the answer key says ab^2 sqrt abc.
*April 25, 2014*

**Algebra**

(sqrt a^3 b^5 c^3)
*April 25, 2014*

**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*

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