Monday

April 27, 2015

April 27, 2015

Total # Posts: 420

**calculus**

cos2x=secx find x
*March 31, 2015*

**Algebra **

3x-(2•3)=-2 I need help simplifying Just don't know how to do it.
*February 20, 2015*

**life orientation**

Communication in relationships:keeping things to yourself means you do not trust your partner,therefore your relationship is affected negatively and to an extent where you no longer tell him or her that you love them,then bae suspects you of cheating which can lead to a ...
*February 17, 2015*

**Physics**

One 3.30 kg paint bucket is hanging by a massless cord from another 3.30 kg paint bucket, also hanging by a massless cord, as shown in figure below. If the two buckets are pulled upward with an acceleration of 1.57 m/s by the upper cord, calculate the tension in the lower cord...
*February 16, 2015*

**Algebra**

10+(7x)=5x-9
*February 7, 2015*

**ELA**

Ok, I thought it would be Dynamic character but I just wanted to be safe. Thank you so much :)
*January 7, 2015*

**ELA**

The main character of the story and the "owner" of the central conflict is... Protagonist, Antagonist, Sympathetic character, or Dynamic character?
*January 7, 2015*

**biology**

Specifically which phases for the Cell Cycle and Meiosis would you see significant differences in? Can someone please help me by explaining this to me?
*December 30, 2014*

**Physics Projectile Motion**

You arrive on an unknown planet with your team of astro-scientists. This time, to calculate acceleration due to gravity you decide to drive your buggy off of a 16 meter tall cliff. If you drive at a velocity of 22 m/s off the cliff and land 55.1 meters away, what is your air ...
*October 14, 2014*

**Chemistry**

For a tablet containing 500mg vitamin C, Calculate how many mL of 0.095M NaOH are required for titration ( molar mass of ascorbic acid- vitamin c is 1.76.12g/mol) I am not sure of the conversions to use, how to get started with the question.
*October 13, 2014*

**science**

what volume occupy 90g/
*September 25, 2014*

**math**

If sales tax is 1/16 of the price and the price is $16 how much tax do I pay?
*September 18, 2014*

**MATH**

you have a pair of newborn hamsters. each pair that is at least one month old produces a new pair every month. at this rate, you will have 178 hamsters at the end of what month? (The math relay officials said the 10th month but I think that it should be the 8th)
*March 25, 2014*

**Health (STD's)**

I need a few words that I can put in my crossword puzzle that go along with Chlamydia... Can anyone help?
*March 12, 2014*

**science(check answers)**

B and D
*March 12, 2014*

**Geometry**

The sides of a quadrilateral are 3, 4, 5, and 6. Find the length of the shortest side of a similar quadrilateral whose area is 9 times as great. A. 9 B. 13.5 C. 27
*January 23, 2014*

**chemistry**

A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium: A) approximately equal reactants and products B) some reactants and products with reactants slightly favored C) some reactants and products with products slightly ...
*December 6, 2013*

**chemistry**

A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:
*December 6, 2013*

**chemistry**

A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:
*December 6, 2013*

**english**

can somebody give me ten facts about Hades, keeper of the underworld?
*December 5, 2013*

**history**

Sans-Culottes
*November 29, 2013*

**disease**

can somebody describe coronary heart disease?
*November 18, 2013*

**History**

How wide was the secret hallway behind the bookcase in Anne Franks House?
*November 1, 2013*

**Calculus**

I feel really stupid, because I think the answer may just be the sqrt(g/k).
*October 7, 2013*

**Calculus**

I am stuck, too. We are trying to find an expression for terminal velocity, or where (d^2h/dt^2) = 0, in terms of g and h. I do not think we are allowed to integrate just yet, so how would we do this?
*October 7, 2013*

**Math**

Find k such that the line [y=5x-4] is tangent to the function : x^2-kx
*September 15, 2013*

**ALGEBRA**

5x-3y=2x-xy -3y=2x-5x-xy (subtract 5x) -3y=-3x-xy (combine like terms) -3y=x(-3-y) (pull an X out.) (-3y)/(-3-y)=x. (Divide to get x alone.)
*September 15, 2013*

**Calculus**

Find k such that the line [y=5x-4] is tangent to the function : x^2-kx
*September 15, 2013*

**physics**

A ball is thrown upward with an initial velocity of 14 m/s. At what time does the ball reach the high point in its flight? (Use the approximate value of g = 10 m/s2 and remember that the velocity is equal to zero at the high point.)
*June 17, 2013*

**reading**

All of the following are goals of study reading EXCEPT: A. greater speed. B. retain information in your long-term memory. C. be an active reader. D. active reading
*April 8, 2013*

**Chemistry**

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)
*April 3, 2013*

**math**

different was to make this equation true. 24 x 18=
*March 25, 2013*

**physics**

A small 0.533-kg object moves on a frictionless horizontal table in a circular path of radius 1.10 m. The angular speed is 6.41 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under...
*March 22, 2013*

**Chemistry**

How many drops (1 drop=0.05mL) of 0.20M KI must we add to 100.0 mL of 0.010M Pb(NO3)2 to get a precipitate of lead iodide to start. Ksp of PbI2=7.1e-9. Answer=9 drops. Please show steps.
*March 17, 2013*

**Chemistry**

How many drops (1 drop=0.05mL) of 0.20M KI must we add to 100.0 mL of 0.010M Pb(NO3)2 to get a precipitate of lead iodide to start. Ksp of PbI2=7.1e-9. Answer=9 drops. Please show steps.
*March 17, 2013*

**Math**

A 6 ft person has a shadow 5ft long. A nearby tree has a shadow 30ft long. How tall is the tree?
*March 7, 2013*

**Calculus**

Yes between the interval x=1 and x=3 and in the second term it is 1/(4x^2)
*January 25, 2013*

**Calculus**

Find the arc length given the equation y=(x^4/8)+(1/4x^2) [1,3]
*January 25, 2013*

**Calculus**

Find the arc length given the equation y=(x^4/8)+(1/4x^2) [1,3]
*January 25, 2013*

**Pleaseeeeeeeee Help me**

Do your own homework, this stuff is easy you might be failing if you can't handle it.
*January 2, 2013*

**physics**

Can you find the pressure exerted on the floor by the heel if it has an are of 1.50 cm^2 and the woman's mass is 55kg?
*December 11, 2012*

**chemistry**

At a certain temperature, the Equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.500 mol of H2 and 0.500 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at Equilibrium? equation: H2 + I2 = 2HI
*December 11, 2012*

**Math**

Two numbers total 43 and have a difference of 21. Find the two numbers
*December 5, 2012*

**Physics**

In 0.369 s, a 14.2-kg block is pulled through a distance of 3.60 m on a frictionless horizontal surface, starting from rest. The block has a constant acceleration and is pulled by means of a horizontal spring that is attached to the block. The spring constant of the spring is ...
*November 13, 2012*

**social studies**

need help in filling in a diagram sea of air layers of atmospher
*October 30, 2012*

**Physics**

A pendulum consists of a 2.6 kg stone swinging on a 4.5 m string of negligible mass. The stone has a speed of 7.9 m/s when it passes its lowest point. (a) What is the speed when the string is at 53 ¢ª to the vertical? (b) What is the greatest angle with the vertical ...
*October 25, 2012*

**science DUE FIRST THING IN THE MORNING PLEASE HELP**

where did the water on the outside of a glass come from
*October 24, 2012*

**science**

where does the water on the outside of a glass cup come from
*October 24, 2012*

**science **

What property of gases allow them to completely fill whatever space they are in?
*October 24, 2012*

**us history**

what is the worlds greatest invention???
*October 24, 2012*

**Physics relationship**

Let W1 represent the work required to accelerate an object on a frictionless horizontal surface from rest to a speed of v. if W2 represents the work required to accelerate the same object on the same surface from a speed of v to 2v, then which one of the following is the ...
*October 16, 2012*

**Math. easy?**

On his 13th birthday he was 112cm tall and on his 14th birthday he was 121cm tall. Assume a geometric monthly growth rate. What is this rate? I just need to know how to set it up. Please and thanks
*October 14, 2012*

**Physics**

A cow pat was thrown 81.1m. Assuming the initial launch angle was 45 degrees, and neglecting air resistance, determine the total time the projectile was in flight. a) 4.83s b) 5.28s c) 4.07s d) 5.87s e) 4.35s
*October 9, 2012*

**Math, due tonight!**

Assume that all linear dimensions of an animal increase by 12%. Then the animal will have the same shape. How do the surface area, the volume and the weight (under assumption of constant specific gravity) increase? Give the percentage of the increase.
*September 30, 2012*

**MATH**

Assume that all linear dimensions of an animal increase by 12%. Then the animal will have the same shape. How do the surface area, the volume and the weight (under assumption of constant specific gravity) increase? Give the percentage of the increase.
*September 30, 2012*

**Physics**

A 1500 kg car moves along a horizontal road at speed v0 = 21.9 m/s. The road is wet, so the static friction coeﬃcient between the tires and the road is only µs = 0.302 and the kinetic friction coeﬃcient is even lower, µk = 0.2114. The acceleration of ...
*September 29, 2012*

**Physics Vectors**

two vectors A and B have magnitude such that A>B. We do not know the directions of the vectors. however we can say that the magnitude of the sum A+B must be between? a) B and 2A b)A and A+B c) A-B and A+B d) A-B and A e) B and A+B
*September 27, 2012*

**History**

My teacher was not very clear in explaining this topic, I need a refresher I guess.
*September 25, 2012*

**History**

Comparing French, Dutch, and English colonies, which ones attracted the most settlers, and which the fewest? In what colonies were women scarce? What impact did these differences in emigration have on the various colonies development?
*September 25, 2012*

**science**

what are controls and variables?????????
*September 13, 2012*

**algebra**

thank you very much this really helped a lot!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*August 30, 2012*

**algebra**

i need some examples of addition problems with negative answers can anybody help me ??????????????????
*August 30, 2012*

**chemistry**

I see your error. You used the incorrect freezing point depression constant: .52 instead of 1.86.
*July 12, 2012*

**chemistry**

This sounds like solid reasoning, but I apologize, because the answer in the back of my textbook says 0.56 mL of 12.0 M HCl.
*July 12, 2012*

**chemistry**

PLEASE SHOW PROCEDURE! You wish to prepare an aqueous solution that has a freezing point of -0.100 degrees Celsius. How many milliliters of 12.0 M HCl would you use to prepare 250.0 mL of such a solution? [Hint: Note that in a dilute aqueous solution, molality and molarity are...
*July 12, 2012*

**Macroeconomics**

Describe how each of the following will affect the equilibrium price level(P) and real output(Y) in the short run(Assume the economy is initially in the long-run equilibrium.) (a) A reduction in the real interest rate (b) A widespread fear of deep recession on the part of ...
*June 19, 2012*

**physics**

A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s2 for 14.0s. It runs at a constant speed for 70.0 s and then slows down at a rate of -3.50 m/s2 until it stops at the next station. a) Sketch a position vs. time graph for this problem. b) Sketch...
*June 4, 2012*

**physics**

A runner covers one lap of a circular track 40.0 m in diameter in 62.5 s. Suppose initially the runner starts by going in the north direction. Assume the speed is constant for the first half-lap and then constant for the 2nd half-lap. Suppose instead the runner ran these same ...
*June 4, 2012*

**geometry**

The 1700 matches my answer so is that the one I use
*May 25, 2012*

**geometry**

The volume of a sphere is 2,098pim^3 what is the surface area to the nearest tenth
*May 25, 2012*

**geometry**

abcd is a parallelogram. if ab is equal to 2x+1 and cd is equal to x +13,findx
*May 25, 2012*

**geometry**

Use formulas to find the lateral area and surface area of the given prism round to nearest whole number Believe height 4m and base on side 7m, front 29m, other end 7.28m possible answers; 472m^2;486m^2 443m62;486m^2 472m62;479m^2 443m62;500m^2 Can someone possibly help me
*May 24, 2012*

**geometry**

I guess I'm lost my answer choices are; 7/2+21/2sqrt3 21+7sqrt3 7+21sqrt3 21/2+7/2sqrt3 So I don't understand
*May 24, 2012*

**geometry**

Sorry, but I still don't get it
*May 24, 2012*

**geometry**

The length of the hypotenuse of a 30, 60, 90 triangle is 7 how do you find perimeter?
*May 24, 2012*

**geometry**

i figured out the mean sqrt of 1089=33
*May 23, 2012*

**geometry**

find the geometric mean of the pair of numbers 99 and 11 kristen lives directly east of the park the football field is directly south of the park the library sits on the line between kristens home and the football field at the exact point where an altitude to the right formed ...
*May 23, 2012*

**Chemistry**

The pH of a solution is 1. Which of the following statements are also true for the solution? (Select all that apply.) It will change the color of red litmus to blue. The concentration of hydronium ion is equal to the concentration of hydroxide ion. The solution is acidic. It ...
*May 18, 2012*

**math**

nvm i just did b*(-1x^2+122x)=61
*April 28, 2012*

**math**

i am trying to write a script for an animation so that it follows a specific path. the animation begins at the origin, goes upwards to the point (61,61) then falls to (122,0) in a parabola. i am trying to figure out the equation for this line. x-intercepts: 0 & 122 vertex: (61...
*April 28, 2012*

**chemistry**

If 90 mL of laundry bleach containing a 5.0% w/v concentration of sodium hypochlorite is recommended per load of laundry, what mass of sodium hypochlorite is being used per load?
*April 26, 2012*

**phys**

327
*April 26, 2012*

**english**

what is the Gerund phrase and Noun function in these sentences? 1)Writing a research paper sounds difficult. 2)He must like studying calculus. 3)Her favorite pastime is entertaining friends. 4)Water skiing, sailing, and swimming are my favorite summer sports. 5)I enjoy playing...
*April 3, 2012*

**english**

i am new to this
*April 3, 2012*

**english**

what is the function of the italicized infinitive phrase in these sentences? 1)May I have permission to use the car tonight? 2)He went to Europe to study architecture. 3)Can you give me a place to put my things? 4)I want to go with you to the store. 5)To help you is my ...
*April 3, 2012*

**Physics**

A cannon tilted up at a 34.0^\circ angle fires a cannon ball at 69.0 m/s from atop a 23.0 m-high fortress wall. What is the ball's impact speed on the ground below?
*March 29, 2012*

**College physics**

Consider the two situations. In the first a machine must pull a box up a rough slope at constant speed. The mass of the box is 800 kg, the coefficient of kinetic friction is 0.2, and the slope is inclined at 15 degrees to the horizontal. In the second situation the machine ...
*March 27, 2012*

**ap world history**

what was the world bank? why was it created?
*March 26, 2012*

**Geometry**

How do I find the area of a right triangle with a hypotenuse that measures 39 cm anad a leg that measures 15 cm?
*March 21, 2012*

**Poetry, plz comment**

this was beautiful.
*March 15, 2012*

**physics**

What is k?
*March 9, 2012*

**physics**

Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 4.00 m/s. At what final speed would the child enter the water if the water slide were twice as high? Ignore friction and resistance from the air and ...
*March 9, 2012*

**algebra**

composite function Find ( f o g) (-5) if f(x)= -2x-7 g(x) = -4x + 3
*March 2, 2012*

**physics**

A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.770 and 0.470, respectively.
*February 16, 2012*

**math**

>.> and the question is...?
*February 13, 2012*

**Math [Trig]**

how do you find a full cycle of a trigonemtric function?
*February 13, 2012*

**math**

what items?
*February 13, 2012*

**Calculus**

The answer to your question is 3
*February 12, 2012*

**physics**

Two boxes (b1 = 23 kg and b2 = 57 kg) are being pushed across a horizontal frictionless surface, as the drawing shows. The 48-N pushing force is horizontal and is applied to the 23-kg box, which in turn pushes against the 57-kg box. Find the magnitude of the force that the 23-...
*February 10, 2012*