# Posts by Thomas

Total # Posts: 735

**Pre-Calc**

Can anyone direct me to learn more about polar coordinates. I'm in online college course and really am confused. In high school, I never heard of polar coordinates. Like they say is the following the graph of point (3,15) and show it on polar grid-I don't get it at all...

*September 24, 2011*

**math**

If arc BF = 45‹ and arc AE = 39‹, what is the measure of Ú1?

*September 19, 2011*

**Business**

Name a business that has demonstrated accountability to people, to its community, and to its environment

*August 22, 2011*

**Science**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...

*August 18, 2011*

**Ag econ**

How do you prove marginal profitability of implementing precision ag practices to a farm operation.

*August 3, 2011*

**Business Communication**

In which of the following situation would it be BEST to recast the situation as a positive message? A.When you want to maintain goodwill with the reader, because you still have to deal with each other. B. When there really is not a reason for the refusal. C. When you can offer...

*August 1, 2011*

**alegebra**

solve this system of equation using the substitution method. 6x+8y=72 2x+5y=45

*July 24, 2011*

**algebra II**

Solve using the quadratic formula: x^2 - 3x - 5 = 0

*July 3, 2011*

**algebra II**

Solve by completing the square: a^2 - 4a = -8

*July 3, 2011*

**grammar**

Thanks!

*July 1, 2011*

**grammar**

It is not used in a sentence. elizabethan drama- I need to tell if either word needs to be capitalized.

*July 1, 2011*

**grammar**

Elizabethan drama-Should drama be capitalized Martin Luther King Day-Shouldn't Day be capitalized because it is a holiday

*July 1, 2011*

**Physics**

Light is both a mechanical wave and a particle.

*June 26, 2011*

**Engineering Math**

solve the 1st differential equation: y1+4y=cos(x) with intial condition y(pie/3)=1

*June 24, 2011*

**Math Statistics**

(46,500 – 47,000)/[5500/sqrt(30)]=

*June 16, 2011*

**Statistics**

A group of scientists created 150 trials to measure whether electric shock treatment could cure paranoid delusions. Of these trials, 52 were successful. Find the margin of error E that corresponds to a 95% confidence level. The critical value for 95% confidence level is 1.96.

*June 15, 2011*

**Math**

30 x 20 x 10 doesn't fit the surface area

*May 30, 2011*

**Life orientation**

Life style disease is a result of an inappropriate relationship of people with their environment

*May 12, 2011*

**math**

Consider the function f(x) whose second derivative is f''(x) = 5 x + 6 \sin (x). If f(0) = 4 and f'(0) = 2, what is f(x)?

*April 6, 2011*

**physics-Momentum**

A Cadillac of mass 2210 kg going east collides with a Geo of mass 1240 kg headed north on a level highway. The cars remain tangled and slide to rest after traveling 25 m in a straight line at an angle of 20° north of east. The coefficient of kinetic friction for the tires ...

*March 29, 2011*

**Math**

A fence is to be built to enclose a rectangular area of 200 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 13 dollars per foot. Find the length L and the width W (with W less than or ...

*March 23, 2011*

**Finance**

Find the lump sum deposited today that will yield the same total amount as payments of $10,000 at the end of each year for 15 years at a rate of 4% compounded annually.

*March 21, 2011*

**chemistry**

With a half-life of 14.3 years, how long will it take for100 g of phosphorus32 to decay to 12.5 mg?

*March 14, 2011*

**Math**

One summer, Jared earned $26 each time he mowed the lawn. He mowed the lawn a total of 13 times that summer. He had to fix his lawn mower one time during the summer, which cost him $32.42. Which number sentence could be used to find M, Jared's profit for the summer ...

*March 13, 2011*

**Geometry**

The measure of the supplement of an angle is one fourth the measure of the angle. What is the measure of each angle?

*February 26, 2011*

**Chemistry**

nothing will happen.

*February 24, 2011*

**literature--Please help me!!!**

how does eudora welty use dialogue to establish characters?

*February 20, 2011*

**Chemistry**

The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O <-> HNO2 + OH¯ ?

*February 17, 2011*

**Chemistry**

The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O <-> HNO2 + OH¯ ?

*February 17, 2011*

**math**

my house payment is 800 dollars a month @ 5.5 % interest for 30 years at the end of 30 years ,how much would i pay ?

*February 16, 2011*

**math**

my house payment is 800 dollars a month @ 5.5 % interest for 30 years at the end of 30 years ,how much would i pay ?

*February 16, 2011*

**English**

Ok thank you

*February 13, 2011*

**English**

Is this sentence correct? I sat down with him and helped him with the layers of the earth worksheet. Or do I need to take out the before layers

*February 13, 2011*

**Science**

Calculate the Mass of C6H12O6 needed ot generate 2575 KJ of energy

*February 10, 2011*

**College Physics :/**

25

*February 10, 2011*

**Math**

how do i find the revolutions per minute of a pulley that is turned 120 degrees per second?

*February 2, 2011*

**Physics; Elect.**

1. A charge (uniform linear density=9.0 nC/m) is distributed along the x-axis from x=0 to x=3.0m. Determine the magnitude of the electric field at a point on the x axis with x=4.0m. a)81 N/C b)74 N/C c)61 N/C d)88 N/C e)20 N/C 2. A +2nC point charge is placed at one corner of ...

*February 1, 2011*

**Algebra**

Determining whether the rational function f(x)=8x2+4*4x ihas symmetry?

*January 22, 2011*

**Algebra II**

Thanks-much appreciated

*January 8, 2011*

**Algebra II-Please recheck**

Okay, let me try this again-I meant 8, not 6-a typo but then why is y>=8 in this one and the other one it is y>-5 and not greater and equal-is it because of the positive sign? So for y = 3^x - 4, the range would be y >-4 and not y >= (-4), right-I'm just trying...

*January 8, 2011*

**Algebra II-could you just check this**

So is that the "K" I'm looking at to solve for the range-my teacher keeps talking about the a h, k, ect and what effect they have Like if it said y = 2^x + 8 the range would be y>6 Thank you

*January 8, 2011*

**Algebra II**

How do you find the range of this problem? y = 4^x - 5 Where do I even look for the range?

*January 8, 2011*

**Human Body Systems**

Is the pupil medial to the iris?

*January 5, 2011*

**Business math**

254 trade discount series 11/10/11 What is the trade discount and what is the net price of the kennel?

*December 9, 2010*

**Calculus**

I have a cone and water is leaking from it at a rate of sqrtV*-2 how do i find out how long it takes

*December 9, 2010*

**sociology**

I think we all go to Rasmussen. im in central florida. how about everyone else?

*December 3, 2010*

**physics**

You own a yacht which is 14.5 meters long. It is motoring down a canal at 9.80 m/s. Its bow (the front of the boat) is just about to begin passing underneath a bridge that is 30.0 m across. How much time is required until its stern (the end of the boat) is no longer under the ...

*November 29, 2010*

**Physics**

The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 6.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could take the vehicle to ...

*November 29, 2010*

**Physics**

thank you

*November 29, 2010*

**Physics**

An elevator manufacturing company is stress-testing a new elevator in an airless test shaft. The elevator is traveling at an unknown velocity when the cable snaps. The elevator falls 2.50 meters before hitting the bottom of the shaft. The elevator was in free fall for 0.900 ...

*November 29, 2010*

**social studys**

what is two spanish artifacts?

*November 29, 2010*

**social studys**

what is two spanish artifacts?

*November 29, 2010*

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...

*November 17, 2010*

**3rd grade**

55 in the emptier jar and 95 in the other jar.

*November 17, 2010*

**A&P**

When a virus has taken over

*November 17, 2010*

**physics (work shown)**

.63 x 9.8 = 6.174 not 2.52

*November 17, 2010*

**Math. HELP!**

Reiny. You. Are. God. Thank you :D

*November 17, 2010*

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...

*November 17, 2010*

**Media Studies**

The loudest person gets heard, doesn't matter if what they say makes sense.

*November 17, 2010*

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...

*November 17, 2010*

**science**

throw the jet pack in the opposite direction of where the space station is. The equal opposing forces will mean that throwing the pack will actually propel you in the opposite direction that you threw it in, and since there is no friction in space, you won't stop until you...

*November 17, 2010*

**Math**

yes they are equal. they can help in finding the area of a triangle because it shows that it doesn't matter if you half the base or the height and multiply them with eachother to get a triangle Triangle = 1/2 * base * height what this is saying is that whether you do (1/2 ...

*November 17, 2010*

**5th grade (thomas)**

wait nevermind, the answer IS 3 7/10 is was reading the question incorrectly, sorry!

*November 17, 2010*

**5th grade (thomas)**

no the answer is not m=3 7/10

*November 17, 2010*

**5th grade**

6 - m = 2 3/10 6 - m = 20/10 + 3/10 6 - m = 23/10 -m = 23/10 + 6 -m = 23/10 + 60/10 -m = 83/10 m = -8 3/10

*November 17, 2010*

**Math**

since 100cm = 1m A = 100cm x 50cm A = 5000cm squared

*November 17, 2010*

**Math**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...

*November 17, 2010*

**chemistry........help!! =)**

So, MaVa = MbVb implies that for the same mass and volume, neutralization will be possible because of a 1:1 ratio. This is seen in HCL + NaOH reaction: HCl + NaOH = NaCl + H20 As you can see no balancing, and there is the same coefficient in front of HCl as there is NaOH (it&#...

*November 17, 2010*

**Calc**

What is the area that this encloses? r = 4cos(3θ)

*November 14, 2010*

**9th grade**

how do i use the distributive property???

*November 11, 2010*

**Maths**

What is the answer to the following using sicentific calculator 64-1/6

*November 1, 2010*

**physics**

A 3.0-kg body is initially moving northward at 15 m/s. Then a force of 15 N, toward the east, acts on it for 4.0 s. (a) At the end of the 4.0 s, what is the body’s final velocity? (b) What is the change in momentum during the 4.0 s?

*October 26, 2010*

**Physics**

Three blocks, connecting ropes, and a light frictionless pulley comprise a system, as shown. An external force P is applied downward on block A (12Kg). The system accelerates at the rate of 2.5m/s^2. The tension in the rope connecting block B (18Kg) and block C equals 60N. ...

*October 25, 2010*

**Physics**

Side note: Since Olaf wasn't moving initially, molaf*Vi2 = 0

*October 24, 2010*

**Language Arts**

Thanks

*September 29, 2010*

**Language Arts**

What are the appositives in this sentence:Football, a game loved by millions of people, is becoming even more popular.

*September 29, 2010*

**3rd grade**

complete to show how you can find the sum by making a ten, hundred, or thousand. 9+5=14 9+1+ blank 10+ blank blank 90+50=140 90+10+blank 100+blank blank 900+500=1400 900+100+blank 1000+blank blank

*September 29, 2010*

**cpcc**

A 134 N bird feeder is supported by three cables as shown in Figure P4.17. Find the tension in each cable. right cable 1 N left cable 2 Your response differs from the correct answer by more than 10%. Double check your calculations. N

*September 28, 2010*

**cpcc**

In Figure P4.30, m1 = 10.0 kg and m2 = 4.5 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. Figure P4.30 (a) If the system is released from rest, what will its acceleration be? 1 m/s2 (b) If...

*September 27, 2010*

**cpcc**

A frictionless plane is 10.0 m long and inclined at 33.0°. A sled starts at the bottom with an initial speed of 4.30 m/s up the incline. When the sled reaches the point at which it momentarily stops, a second sled is released from the top of the incline with an initial ...

*September 27, 2010*

**trig**

HOW DO YOU SOLVE THIS PROBLEM, sin theta>0,cos theta>0

*September 21, 2010*

**Algebra Alley(MATH)**

In similiar triangles <A = <R, <B = <S & <C = <T < A = 2(x+15) < B = 3x < C = x <A + <B + <C = 180^0 2(x+15) + 3x + x = 180 2x + 30 + 3x + x = 180 6x + 30 = 180 6x = 150 x = 25^0 <B = 3x = 3(25) = 75 degrees <R = 2(x+15) = 2(25+15) = (...

*September 20, 2010*

**geometry**

the measure of angle xyz is 140degree what is the value of x (2x+6)degree

*September 20, 2010*

**CP Biology**

At what temperate are potassium nitrate and potassium chloride equally soluble?

*September 16, 2010*

**college physics**

A car starts has a position (in meters) given by x=kt^3 +2t where k is a constant ans t is in seconds. The velocity (in m/s) of the car at t=1 is:

*August 24, 2010*

**college physics**

Each of four particles moves along an x-axis. Their coordinates (in meters) as functions of time (in seconds) are given by: Particle #1: x(t)=2t^2-4 Particle #2: x(t)= -3t-4 Particle #3: -2t^2-4 Particle #4: 2 *[sq. root (t+1)] -4 Which of these particles are speeding up for 0...

*August 24, 2010*

**college physics**

An object thrown vertically upward with initial velocity from the surface of the Earth reaches a height H before falling back toward the Earth. If initial velocity is doubled, the object reaches a maximum height equal to ________. Ignore air resistance.

*August 24, 2010*

**math**

tropical pools sells an above ground model for p dollars each the monthly revenue for this model is given by the formula R(p)=-0.08p^2+300p revenue is the product of the price p and the demand(quanity sold) a.) factor out the price on the right hand side of the formula b.) ...

*August 5, 2010*

**PSYCHOLOGY**

1 a 2 a 3 d

*July 17, 2010*

**chemistry**

Thank You, i got it. The answer was 8.7

*July 12, 2010*

**chemistry**

When you set up the ICE chart, are you supposed to bring the 0.05 to the product side to give you an equation of x^2 / x - 0.05?

*July 12, 2010*

**chemistry**

hello, I can't seem to solve this question. i tried to look up someone else who may have asked this question. I found this girl named Sara,but her answer didn't really help me much because it did not answer the question. What is the pH when enough 0.10 M NaOH Base (in ...

*July 12, 2010*

**chemistry**

When you set up the ICE chart, are you supposed to bring the 0.05 to the product side to give you an equation of x^2 / x - 0.05?

*July 12, 2010*

**chemistry**

Wouldn't the pH be 7 for the strong acid, not 8? I'm confused....

*July 12, 2010*

**chemistry**

hello, I can't seem to solve this question. i tried to look up someone else who may have asked this question. I found this girl named Sara,but her answer didn't really help me much because it did not answer the question. What is the pH when enough 0.10 M NaOH Base (in ...

*July 12, 2010*

**Math problems**

solve- 7 x + 2 -- ---- 24 = 12 x over 3 = 224 over 720

*July 8, 2010*

**Calculus**

When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^{1.4}=C where C is a constant. Suppose that at a certain instant the volume is 530 cubic centimeters and the pressure is 97 kPa and is decreasing at a ...

*June 19, 2010*

**us history**

what battle marked the beginnign of U.S involvement in Vietnam

*June 7, 2010*

**Vectors**

If |u| = 10, |v| = 8, and the angle formed between them is 60°, then u · v = .

*May 28, 2010*

**Math**

The probability that a school bus is late is 0.04. How many times would you expect the bus to be late in a 5-week period?

*May 25, 2010*