Sunday

December 21, 2014

December 21, 2014

Total # Posts: 166

**calc / physics**

Suppose that a 5-foot-long chandelier falls from a 35-foot ceiling and that you are 6 feet tall and standing directly under the chandelier (a) How long do you have to get out of the way when it drops? =-16(t^2)+Vt+h =-16(t^2)+0+(35-5-6) (for the bottom of the chandelier and ...
*October 1, 2014*

**Algebra**

Oh thank that did help :D
*August 27, 2014*

**Algebra**

If twice the opposite of a number increased by five, then the result is the opposite of a number. What is the number? What is this even asking off me?
*August 27, 2014*

**math equation**

Please help me to work this out using the inversion method (I'd appreciate if you could provide a step by step breakdown (I don't understand how to do it and my math really sucks!!): Jim spent 1/3 of his salary on food. He spent 1/4 of it on shoes. He has $400 ...
*June 12, 2014*

**Math Help? Check my answers.**

Sorry! How about now? 2. B 3. A 4. D
*May 19, 2014*

**Math Help? Check my answers.**

1. Name the coefficients in the polynomial. 4x^2 + 3x - 3 4, -3, -3 4, 3, 4, 3, 3, -4, -3, 2. How many terms are in the following polynomial? 6x^4 + 3x^3 - 2x^2 + 15x - 14 5 4 3 2 3. In the expression -7x - 5x^2 + 5, what is the coefficient of x? 7 5 -5 -7 4. Write the ...
*May 19, 2014*

**science**

i think its b
*May 14, 2014*

**Math Help? Check my answers.**

1. Find the next three terms in the sequence. 30, 22, 14, 6, ... -3, -12, -21 -1, -8, -15** -1, -2, 3, -2, -10, -18 2. Find the next three terms in the sequence. 3, 6, 9, 12, ... 15, 18, 20 15, 19, 20 15, 18, 21 14, 18, 21** 3. Find the next three terms in the sequence. -1, 9...
*April 23, 2014*

**english**

In letter A. into is italicized In letter B. ill is italicized In letter C. at is italicized In letter D. disdainfully is italicized.
*March 21, 2014*

**english**

Which of the following sentences contains an italicized word that's used as a predicate adjective? A. Jerry looks into the microscope. B. Jerry looks ill today. C. Jerry looks at the map. D. Jerry looks disdainfully at the pile of laundry. I think it's B.
*March 21, 2014*

**history,geograph,life science,life orentation,mathematical literacy,english**

Maths lit geography agricultural science life orientation
*February 24, 2014*

**college physics**

(a) use d=vi*t+0.5*a*t^2 manipulate the equation to solve for t 210 m = (23 m/s)t+0.5(0.150 m/s^2)*t^2 t = 9.41 s (b) v = d/t = 210 m/ 9.41 s = 22.3 m/s I'm still trying to figure out the rest...
*January 25, 2014*

**math**

-2(-3x+ 4) >greater or equal to 3(5-2x)
*November 4, 2013*

**math**

how do you do this problem of inequality -2(-3x4 > 3(5-2x)
*November 4, 2013*

**Math**

How can you write a unit rate if at least one term is a fraction? How is this different from writing a unit rate where both terms are whole numbers?
*September 5, 2013*

**Mahlangu**

Identify one environmental or human factor that causes ill health,accidents,crises and disasters within your community or any other community within South Africa.
*June 18, 2013*

**thermodynamics**

a carnot machine operates between a hot reservoir at 200 grade C and a cold reservoir at 20 grade C. When operated as an engine it receives 1000 KJ/kg; find the work output. Find the COP when operates as a refrigerator and a heat pump.
*April 28, 2013*

**Chemistry**

Explain how water of hydration is related to measurement. Then explain how it is related to the law of definite composition
*April 7, 2013*

**Geometry: Student Correction (Stuck)**

BD = 4 DA = 5 DE = 6 Solving for x 1. Joelle’s proportion is correct. 2. Joelle’s proportion is not correct because BD, which is 4, corresponds proportionally to BA, which is 9, not 5. 3. Joelle’s proportion is not correct because DE, which is 6, does not ...
*March 29, 2013*

**Geometry: Student Correction (Stuck)**

Joelle set up the following proportion: 4/6 = 5/x. Solve for x. Determine if proportion is correct. If not, explain what is wrong with it.
*March 29, 2013*

**Geometry **

Triangle ABC has vertices of A(0,0), B(–4,0)and C(–2,4). The coordinates of each vertex in triangle AEF are multiplied by 3 Is triangle ABC~AEF? Explain.
*March 29, 2013*

**Pre-Algebra**

I had this test these answers are correct you'll get 100% hope it helps 1).1,256ft2 2).4,187ft3 3).615cm2 4).1,436cm2 5).8
*March 13, 2013*

**Chemistry**

What is the percent by mass of glucose in a solution containing .15 mol of glucose dissolved in 410 g acetic acid? The molar mass of glucose is 180g/mol.
*March 1, 2013*

**World Geography**

1.a 2.
*February 19, 2013*

**Math (9th grade)**

Write an equation in point slope form of a line parallel to 12x-2y=6 and passes through the point (-4,-3)
*January 29, 2013*

**Chemistry**

A reaction is peformed in which 50 ml of .400M silver nitrate and 75 ml of .100M hydrochloric acid are mixed together. The initial temperature of the solutionn was 25 C and the final temperature was 27.2 C. What is the enthalpy, in kj/mol, for the formation of the precipitate...
*November 18, 2012*

**chemistry**

what is the sum coefficient and balanced equation of : Co(OH)3+Na2CO3 my answer is 3Co(OH)3+ 3Na2CO3---> 3CoCO3+ 3Na2OH
*October 9, 2012*

**chemistry**

How could you use a precipitation reaction to separate the following pair of cations: K^+ and Hg2 ^2+? (write the formula and net formula for each reactant)? The answer is Hg2 ^2+ (aq) + 2Cl- (aq) = HgCl2(s) but how do I work it out?
*October 7, 2012*

**chemistry**

How do I balance the following equation by the half-reaction method (it takes place in basic solution)? Fe(OH)2(s) + O2(g) = Fe(OH)3(s) the answer is 4Fe(OH)2(s) + 2H20(l) + O2(g) = 4Fe(OH)3(s) but how do I work it out?
*October 7, 2012*

**Math (12th)**

Thank you. I tried that and got 3 :)
*September 27, 2012*

**Math (12th)**

What is the common difference in the arithmetic sequence 30, 27, 24, 21, 18, ...
*September 27, 2012*

**literature**

Is Pride and Prejudice identified more with Romanticism or Realism? Even though it was written during the Romantic period, it seems more like Realism to me. Is this correct? Thanks!
*March 18, 2012*

**Math please help urgent !**

slope**
*February 29, 2012*

**Math please help urgent !**

Find the slop of the tangent to the curve y=(10-sqrt x)(5+sqrt x) at x=25
*February 29, 2012*

**Cross country running**

how do you keep motivated to keep going even though your body wants to quit?
*February 20, 2012*

**Cross country running**

Thankyou very much!
*February 20, 2012*

**Cross country running**

Can I do anything for side cramps during a race?
*February 20, 2012*

**Cross country running**

How does one deal with another runners joy after getting sufficiently skunked? In other words, Can I get some tips on how to be a good sport when I get creamed during a race?
*February 20, 2012*

**science**

what is the geometry around each carbon in ethanoic acid
*February 14, 2012*

**math**

if youre looking for x its 6
*February 2, 2012*

**history**

The Philippine-American war was A) a minor event for americans B) more costly than the spanish american war C) fought in a traditional manner D) never completely resolved E) over even before the spanish american war
*February 2, 2012*

**English**

What is an example in "Antony and Cleopatra" of Casear displaying a disposition to not want to go to war? Thank you!
*January 18, 2012*

**physics**

so i found a formula: m1v1ix +m2v2ix = m1v1fx + m2v2fx which i rearranged to find v1fx and eliminated m2v2ix because m2v2ix = 0 so the eqn looked like: v1fx = (m1v1ix - m2v2fx)/m1 subbing in i got: [(0.029)(200) - (1.1)(6.25)]/(0.029) which gave the answer -59.8276. is this ...
*November 8, 2011*

**physics**

i'm just unsure of what formula i should apply!
*November 8, 2011*

**physics**

A 29 g rubber bullet is travelling to the right at 200 m/s, when it hits a 1.1 kg block of wood sitting on a horizontal frictionless surface. If this collision is inelastic (though not perfectly inelastic), and the velocity of the block of wood after the collision is 6.85 m/s ...
*November 8, 2011*

**physics**

Assume you are given two objects whose centre of mass is located exactly at the origin. The first object has a mass of 33 kg and is located at position +30 m with respect to the origin. If the mass of the second object is 7.0 kg, what is its position (in m) with respect to the...
*November 8, 2011*

**physics**

Ian is firmly attached to a snowboard which is on a flat surface of ice, which you can assume to be frictionless. He and the snowboard are initially at rest. He then throws a 138 g ball which travels at a speed of 19.2 m/s, and finds himself moving backwards at a speed of 0.05...
*November 8, 2011*

**physics**

Is the answer 3645.77? Thanks for your help, btw :)
*November 8, 2011*

**physics**

What is the magnitude of the momentum of a car weighing 1,555 N when it is moving at a speed of 23 m/s? Express your answer in kg m/s.
*November 8, 2011*

**physics**

Assuming maximal power output, how long, in seconds, would it take a 1,535 kg car with a 128 hp engine to accelerate from 50 km/h to 102 km/h? (1 hp = 746 W)
*November 8, 2011*

**social studies**

between 1400000 and 500000 years ago early hominids learned how to?
*November 2, 2011*

**Ecology**

Signs of fish stress include A. increased respiration B. faster scale growth C. reduced feeding rates D. both A and C Thanks for the help!
*October 23, 2011*

**Math**

Lee Holmes deposited $16,600 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $41,600 at 9% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s account? I have tried ...
*October 15, 2011*

** Math**

Thannk you both of you but both answers are incorrect. I can input the answer to see if it is right and both are wrong. We are all missing something. If anyone else wants to try please do!!!
*October 12, 2011*

** Math**

Lee Holmes deposited $16,600 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $41,600 at 9% interest compounded semiannually. At the end of year 6, what is the balance in Lee’s account? I have tried ...
*October 12, 2011*

**history**

thanks so much!
*October 9, 2011*

**history**

I couldn't find it on any of those sites.
*October 9, 2011*

**history**

Hi I was wondering if someone could please help me with this question: What was the place of residence of the Ho-Chunk war chief Red Bird? I have searched many places and have had no luck finding the answer. Thanks much! =)
*October 9, 2011*

**spanish**

can someone tell me what this means please Esta campana muda en el campanario, esta mitad partida por la mitad, estos besos de Judas, este calvario, este look de presidiario, esta cura de humildad. Este cambio de acera de tus caderas, estas ganas de nada, menos de ti, este ...
*October 5, 2011*

**physics**

015 (part 1 of 2) 10.0 points A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 21 below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline ...
*September 23, 2011*

**math**

From the top of a lighthouse 75 feet high, the cosine of the angle of depression of a boat out at sea is 4. To the nearest foot, how far is the boat from the base of the lighthouse?
*September 7, 2011*

**Geometry**

I did, but I don't understand what he typed. Thanks
*July 22, 2011*

**Geometry**

Use the distance formula and the Pythagorean theorem to find the distance, to the neearest tenth, from R(6,-5) to U(-2,6)
*July 22, 2011*

**geometry**

write and equation on point sloop form for the perpendicular bisector of the segment with endpoints A(-3,-3) and B(5,6)
*July 22, 2011*

**geometry**

what does 'sqrt' stand for?
*July 22, 2011*

**geometry**

Use the distance formula and the Pythagorean theorem to find the distance, to the neearest tenth, from R(6,-5) to U(-2,6)
*July 22, 2011*

**geometry**

thanks!
*July 22, 2011*

**geometry**

Sorry, if 6, 10, and 12, and 9, 15 and x are the lengths of the coresponding sides of two similair triangles, what is the value of x?
*July 22, 2011*

**geometry**

if 6, 10, and 12, and 9, and x are the lengths of the coresponding sides of two similair triangles, what is the value of x?
*July 22, 2011*

**geometry**

you rock Reiny! And BTW..I call them vertices also...it was a typo. Thanks for your help!
*July 21, 2011*

**geometry**

this one is killing me for some reason: Find any of the values of k so that (-3, 4), (-8,5), and (-5, k) are the verticles of a right traingle.
*July 21, 2011*

**Geometry**

makes sence now. thanks so much!
*July 21, 2011*

**Geometry**

the lengths of 2 sides of a triangle are 2 inches and 10 inches. find the range of possible lengths for the third side, s.
*July 21, 2011*

**Geometry**

Life saver!! = )
*July 21, 2011*

**Geometry**

THe cosine law is confusing to me. This lesson gives no examples. The triangle is obtuse?
*July 21, 2011*

**Geometry**

Tell if the measures 9,11, and 7 can be side lengths of a triangle. if so, classify the triangle as acute, right, or obtuse?
*July 21, 2011*

**Geometry**

thanks so much!! You are too cool!
*July 21, 2011*

**Geometry**

so the answer is yes?
*July 21, 2011*

**Geometry**

Can a triangle have sides with lengths 7, 13, and 9?
*July 21, 2011*

**Geometry**

Thanks so much! I get it now
*July 21, 2011*

**Geometry**

Ok, I think I understand. so the coordinates of N are (4, -8)
*July 21, 2011*

**Geometry**

M is the midpoint of segment AN, A has coordinates (-6,2) and M has coordinates (-1, -3). What are the coordinates of N?
*July 21, 2011*

**geometry**

One equilateral triangle has sides 5 ft long. Another equilateral triangle has sides 7 ft long. Find the ratio of the areas of the triangles
*July 21, 2011*

**geometry**

Given that triangles KON and LOM are similar, find the scale factor
*July 21, 2011*

**geometry**

That is the question. I don't get it either.
*July 20, 2011*

**geometry**

Using the information about John, Jason, and Julie, can you uniquely determine how they stand with respect to each other? On what basis? Statement 1: John and Jason are standing 12 feet apart. Statement 2: Julie is standing 31º NW of Jason. Statement 3: John is standing ...
*July 20, 2011*

**Geometry**

find m_DCB, given angles A and F are congruent, angles B and E are congruent, and m_CDE=26
*July 18, 2011*

**Geometry**

Triangles ABF and EDG are congruent. Triangles ABF and GCF are equilateral. AG = 24 and CG = 1/5 AB. What is the total distance from A to B to C to D to E?? Please I dont understand this
*July 17, 2011*

**St monica**

Bill and Amy want to ride their bikes from their neighbourhood to school which is 14.4 kilmeters away. It takes Amy 40 mins to arrive at school. Bill arrives 20 mins after Amy. How much faster (in meters/second) is Amy's average speed for the entire trip?
*July 5, 2011*

**literature**

novel phrase the domesticated generation fell from him ?
*May 17, 2011*

**literature the novel**

allegory of the call of the wild
*May 17, 2011*

**math**

What is the average area of a theme park? Thanks!
*April 15, 2011*

**5th grd math- metric conversion**

30m = 6000, i have converted to cm, in, and ft, no where close to getting 6000? help
*March 7, 2011*

**physics**

Our text does not even refer to multispectral.
*January 23, 2011*

**physics**

Multispectral refers to: A. UV, IR, and visible light B. the many colors in visible light C. UV, IR, and x-rays Thanks!
*January 23, 2011*

**MATH**

In an arithmetic sequence, the first term is 100 and the sixth term is 85. Find the common difference. Then, find the 50th term of the sequence. Do I use the formula an=a1+(n-1)d? If so, what would my "n" by in the equation?
*January 16, 2011*

**social studies**

Who is the richest person in Paraguay? Thanks!
*November 13, 2010*

**Physics**

The siren of a police car produces a sound of frequency 420Hz.A man sitting next to the road notices that the pitch of the sound changes as the car moves towards and then away from him.1- WRITE DOWN THE NAME OF THE PHENOMENON. 2-ASSUME THAT THE SPEED OF THE SOUND IN AIR IS ...
*October 12, 2010*

**Physics**

True or false the work done by a non-zero net force on an object, moving on a horizontal plane, is equal to the change in the potential energy of the object? and dont forget to give the correct explanation for my q.
*October 9, 2010*