Tuesday

January 27, 2015

January 27, 2015

Total # Posts: 2,140

**precalculus**

covert the rectangular equation to polar form x2+(y+2)2=4
*May 20, 2011*

**precalculus**

fourth roots of 1-root3i
*May 20, 2011*

**Math**

the nature camp students are lunch at the lodge. They sat at an even number of tables. There were 5 students sitting at one table, and an equal number of students sitting at each of the other tables. How many students were sitting at each of the other tables?
*May 18, 2011*

**the American journey**

for #1 I think its C.and #2 A
*May 18, 2011*

**the American journey**

where did the traditions of the the cowhand begin? A.the confederate army? B.the vaqueros C.african american culture D.irish immigrants
*May 18, 2011*

**the American journey**

how about this one.... Before railroads, communities across the united states. A. fought the railroad's arrival. B. kept their own time. C. were organized into time zones. D. found it easier to transpot goods to market.
*May 18, 2011*

**the American journey**

1.why were immigrants and african americans hired to build the transcontinental railroad?A.they lived near the railroad?B.they were extremely skilled.C.they would work for very low wages.D.all of the above
*May 18, 2011*

**Geometry**

find the area of a parallelogram with diagonals of lengths 10 inches and 22 inches that intersect at a 65 degrees angle
*May 17, 2011*

**geometry**

that last answer posted is wrong
*May 17, 2011*

**geometry**

find the area of a parallelogram with diagonals of lengths 10 inches and 22 inches that intersect at a 65 degrees angle.
*May 17, 2011*

**Math**

If M=(1*2*3*4*......*1000) + 1, is M prime? I said no because 24001 can only be divided by 1 and itself, but I got a point off. Why is this?
*May 10, 2011*

**Math - Equivalent Fractions**

What is the equivalent fraction for 16/36
*May 9, 2011*

**ENGLISH**

Explain the initial steps of writing an essay. Identify how your audience, purpose, and content will influence your approach.
*May 6, 2011*

**Business**

I was asked to articulate what I feel are good traits of effective organization, as well as describe how I think culture affects the ability to handel change. I replied with a 350 word response, in my response i stated the "...culturally responsive; this leads way to the ...
*May 6, 2011*

**english**

hoe to diagram the white cat sleeps quietly
*May 6, 2011*

**Algebra**

Which digit will appear in the 534th place after the decimal point in the decimal representation of 5/13?
*May 6, 2011*

**Math**

2 apples weigh the same as a banana and a cherry.A banana weighs the same as nine cherries.How many cherries weigh the same as one apple
*May 5, 2011*

**PreCalc - Vectors**

An airplane is flying with an airspeed of 660 Kilometers per hour. The wind is blowing from 345 degrees at 35 km/h. What direction should the airplane take so that, with the wind, the plane will be flying in a direction of 72 degrees? I can compute airspeed and actual ...
*May 3, 2011*

**Pre-Calculus**

Two barges are pulling a ship into the harbor. Barge A is pulling with a force of 2700N at N43 deg E, and barge B is pulling at S 50 deg E. What force must barge B exert so that the ship is pulled directly East?
*May 2, 2011*

**statistics**

Part B op
*May 2, 2011*

**Algebra**

What is the least integer value of x such that |2x + 7| is < or equal 16?
*May 1, 2011*

**Algebra**

Each year the value of a car decreases by 25% of its value the previous year. After 5 years, what is the value of a car originally worth $17,500? Express answer to the nearest dollar.
*May 1, 2011*

**social civics**

what is the purpose of a franchise agreement for public utility and how public utilities are regulated
*May 1, 2011*

**chemistry**

OF THE FOLLOWING SUBSTANCES, WHICH HAS THE LARGEST AVERAGE SPEED AT 25DEGREES. CO, NH3,H2,N2?
*April 30, 2011*

**geology 245**

Power point on factors and forces of geological features for the Barnett Shale
*April 30, 2011*

**Geology 245**

I am in need of help with my final project in Geology. I have to create a 12-15slide powerpoint presentation on Factors and Forces of Geological Features, The Barnett Shale. I have the final rubric Final Rubric: |Factors and Forces of Geological Features Objective of Exercise...
*April 30, 2011*

**math**

An 11 ounce bag of chips costs $1.99 what is the cost per ounce rounded to the nearest cent? What is the cost per pound rounded to the nearest cent
*April 28, 2011*

**chemistry**

Im lost, I dont think Im doing any of it right :/
*April 28, 2011*

**chemistry**

I still dont understand part e.
*April 28, 2011*

**chemistry**

For part a, would the pH be .523?
*April 28, 2011*

**chemistry**

0.5 L of a 0.30 M HCl solution is titrated with a solution of 0.6 M KOH. a)What is the pH before addition of KOH? b)What is the total number of moles of acid? c)What is the pH after addition of 125 mL of KOH solution? d)What volume of the KOH solution is required to reach the ...
*April 28, 2011*

**Chemistry**

6.71 X 10^-18
*April 27, 2011*

**Math**

I need help solving this using U- Substitution (x^2-4)^2 + (x^2-4) -6=0
*April 27, 2011*

**algebra**

Your company would like to know how sales levels affect profits. If too few items are sold, then there is a loss. Even if too many items are sold, however, the company can lose money (likely because of low pricing). It is good to know how many items can be sold for there to be...
*April 26, 2011*

**algebra 2 and trig (math)**

Find the value of x in the interval 0 is less than or equal to x and 360 is greater than or equal to x which satisfies the equation cos x - 2 cos x sin x.
*April 26, 2011*

**algebra 2 and trig (math)**

Find the positive acute angle that satisfies the equation tan(squared) minus tan = 0.
*April 25, 2011*

**Math**

What is happening?
*April 25, 2011*

**Chemistry **

How many moles of HCl must be added to 100mL of a 0.100 M solution of methylamine (pKb=3.36) to give a buffer having a pH of 10.0?
*April 24, 2011*

**algebra**

x^2+34x+c
*April 20, 2011*

**Physics**

A hydrogen atom initially in its ground state (n = 1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon? *I found the energy of the atom at the ground state and at n = 3. I subtracted the final from the initial to get a value ...
*April 19, 2011*

**Physics**

a man jumps off a bridge to see how high it is. he measures his time of descent. he is in the air for 3.0 s before splashing into the water below. a. How high is the bridge above the water? b. How fast is the man going as he hits the water?
*April 18, 2011*

**Chem**

estimate the aqueous solubility, in milligrams per liter of AgBr(s) at 160 degrees C
*April 15, 2011*

**Chem**

For a solution that is 0.280 M HC3H5O2 (propanoic acid Ka=1.3*10^-5) and 0.0894 M HI, calculate the following. Concentration of H30, OH, C3H5O2-, I-
*April 14, 2011*

**PD-20**

ur mom
*April 13, 2011*

**math**

On the fastest speedways, some drivers reach average of 3 miles per minute. Write a formula that gives the number of miles M that such a driver would travel in X minutes. How far would this driver travel in 38 minutes?
*April 11, 2011*

**math**

on the fastest speedways, some drivers reach average speeds of 2 miles per minute. write the formula that gives the number of miles M that such driver would travel in x minutes. How would this driver travel in 37 minutes
*April 11, 2011*

**statistics**

"Separate the data by company and do descriptive stats for each. Copy and paste into a Word document, formatting appropriately. “Appropriate” includes formatting to a reasonable and appropriate number of decimals, including a good, descriptive caption for the ...
*April 10, 2011*

**TX Goverment**

Does the state (Texas) system for raising revenue rely too much on regressive mechanisms like sales tax, user fees and licenses?
*April 10, 2011*

**math**

If you triple 4 and subtract 2 each day, how many days until you have zero?
*April 6, 2011*

**chemistry**

100 grams of a liquid completely fill a 200 ml bottle. What is the density of the liquid?
*April 5, 2011*

**physics**

The picture tube in an old black-and-white television uses magnetic deflection coils rather than electric deflection plates. Suppose an electron beam is accelerated through a 53.8-kV potential difference and then through a region of uniform magnetic field 1.00 cm wide. The ...
*April 4, 2011*

**Math**

(2/$7.5)=(3.5/x) x=$13.125
*April 4, 2011*

**com155**

Thank you for your help!!
*April 3, 2011*

**com155**

Could you please tell me if the adjectives and adverbs below are correct for my paragraph? Adverbs- responsibly personally not every currently very Adjectives- credit much paying hard minimum one
*April 3, 2011*

**com155**

The following is a paragraph regarding my experience with credit cards. I had to use least five adverbs and five adjectives in my paragraph. I have to bold the adverbs and underline the adjectives, the only problem is I am having a hard time figuring out which are adverbs and ...
*April 3, 2011*

**com155**

Ok Sorry for the misunderstanding.
*April 3, 2011*

**com155**

I need to know the adverbs and adjectives in the paragraph.
*April 3, 2011*

**com155**

Having a credit card could get someone into much trouble if it is not used responsibly. I personally have nightmares when it concerns credit cards. I do not like paying interest on something when it is not necessary. I learned how to use credit cards the hard way. I ran up a ...
*April 3, 2011*

**physics 1001**

The pressure in each of your car tires is 2.10 105 Pa. The mass of your car is 1690 kg. Assuming that each of your tires bears one-quarter of the total load, what is the contact area of each tire with the road?
*April 1, 2011*

**geometry AGAIN**

A
*March 31, 2011*

**math**

what part of a day is 45 minutes?
*March 28, 2011*

**rebus puzzle**

I need a good rebus sit to help sove some rebus puzzles. thanks!
*March 27, 2011*

**REBUS PUZZLES**

These letters are written in large bold print. LIF Next puzzle: A bold diagonal line going from right to left.
*March 27, 2011*

**REBUS PUZZLES**

The two letter E's one is over the V and R and the other letter E is under the T and D
*March 27, 2011*

**REBUS PUZZLES**

I need help with some rebus puzzles please. T H R O U G H The letters TRUH are in Bold color. E OV RRAT D E
*March 27, 2011*

**algebra**

If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a cost decrease of four times?
*March 24, 2011*

**Newton's 3rd Law**

How can I use Newton's 3rd law on a diver off of a diving board? Could I calculate friction against his feet?
*March 22, 2011*

**Calc. Help ASAP please**

the tuition at a college increases exponentially. the current tuition (let it be t=0) is 36,000 and in 2 years it will be 39,690. a) find a formula to predict the cost of tuition in t years. Is this right? And I'm stuck at the end. 39,690= 36,000e^(kt) 11.025=e^(kt) ln(11....
*March 22, 2011*

**science**

why is it so important to have only one set of chemical symbols in the world?
*March 20, 2011*

**science**

Is it possible to study just one atome?why?
*March 20, 2011*

**algebra **

What is the maximum number of cubes measuring 5cm on an edge that can be obtained by cutting a solid cube that measures 1 m on an edge?
*March 20, 2011*

**Calculus **

ok so apparently there's no way to express integral |f(x)|dx in standard mathematical functions... which I don't exactly buy... but ya the issue came up when I was trying to evaluate integral |x - 2|dx and apparently this is correct integral |x-2|dx = 2 - [(x-2)^2sgn(2...
*March 19, 2011*

**Calculus**

ok so apparently there's no way to express integral |f(x)|dx in standard mathematical functions... which I don't exactly buy... but ya the issue came up when I was trying to evaluate integral |x - 2|dx and apparently this is correct integral |x-2|dx = 2 - [(x-2)^2sgn(2...
*March 19, 2011*

**calculus**

use the fact that integral dy/dx dx = integral dy = y find the antiderivative and plug in e and 9 to solve for the constant... i think...
*March 19, 2011*

**physics**

How far will a car moving at 50 miles an hour travel in the time it takes to sneeze?
*March 17, 2011*

**math**

how do i solve this problem? -4n+5m-2-6n+4-3m
*March 15, 2011*

**physics**

A child in a boat throws a 6.00 kg package out horizontally with a speed of 12.0 m/s, Fig. 7-28. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25.0 kg and that of the boat is 50.0 kg. Magnitude ___m/sDirection
*March 13, 2011*

**Word problem solving with graph equation**

Assignment Part I: A system of equations can result in 3 possibilities: consistent, inconsistent, and dependent. Discuss each of these types of solution that can be generated, and describe the graph of each possibility. Part II: Break-Even Analysis and Cost Analysis: As a ...
*March 13, 2011*

**calculas**

If sin theta equals two third and zero degrees less than theta less than 90 degrees find cosine theta
*March 12, 2011*

**algebra**

The constraints don't show when I cut and paste so I will type them out, sorry! 0 less than or equal to x less than or equal to 10, 0 greater than or equal to y greater than or equal to 5 and 3x + 2y less than or equal to 6
*March 9, 2011*

**algebra**

Find the maximum value of the objective function z=24x+7y subject to the following constraints: 1. 0¡Üx¡Ü10, 0¡Üy¡Ü5. 3x + 2y ¡Ý 6
*March 9, 2011*

**physics**

A 8.00 kg shell at rest explodes into two fragments, one with a mass of 2.00 kg and the other with a mass of 6.00 kg. If the heavier fragment gains 130 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain?
*March 8, 2011*

**computer fun**

My sister has no websites to go to for fun.She is 10 so what do you suggest?
*March 6, 2011*

**math**

during a special promotion, each customer who makes a purchase is given a coupon for a discount of either 10,20, 30,40, or 50 percent. if a customer has an equal chance of receiving any one of the 5 types of discount coupons,what is the probability that the first customer will...
*March 6, 2011*

**Physics**

A spiral spring is compressed so as to add U units of potential energy to it. When this spring is instead stretched two-thirds of the distance it was compressed, its remaining potential energy in the same units will be a. 2U/3 b. 4U/9 c. U/3 d. U/9
*March 5, 2011*

**Physics**

Two lumps of clay having equal masses and speeds, but traveling in opposite directions, collide and stick together. Which of the following statements about this system of lumps must be true? A. The momentum of the system is conserved during the collision. B. The kinetic energy...
*March 5, 2011*

**Physics**

A glider airplane is coasting horizontally when a very heavy object suddenly falls out of it. As a result of dropping this object, the glider's speed will a. increase. b. decrease. c. remain the same as it was.
*March 5, 2011*

**Physics**

Cart A, of mass 3.00 kg, approaches and collides with cart B, which has a mass of 7.00 kg and is initially at rest. When the springs have reached their maximum compression, a. cart A has come to rest relative to the ground. b. both carts have the same velocity. c. both carts ...
*March 5, 2011*

**Physics**

A proton with a speed of 4.20×104 km/s makes an elastic head-on collision with a stationary carbon nucleus. We can look up the masses of both particles. Which of the following quantities can be calculated from only the known information? A. The velocity of the proton and...
*March 5, 2011*

**Physics**

You drop an egg from rest with no air resistance. As it falls, a. only its momentum is conserved. b. only its kinetic energy is conserved. c. both its momentum and its mechanical energy are conserved. d. its mechanical energy is conserved, but its momentum is not conserved
*March 5, 2011*

**Physics**

A heavy rifle initially at rest fires a light bullet. Which of the following statements about these objects is true? A. The bullet and rifle both gain the same magnitude of momentum. B. The bullet and rifle are both acted upon by the same average force during the firing. C. ...
*March 5, 2011*

**Physics**

Which of the following statements is true for an elastic collision? A. Both momentum and kinetic energy are conserved. B. Momentum is conserved, but kinetic energy is not conserved. C. Kinetic energy is conserved, but momentum is not conserved. D. The amount of momentum lost ...
*March 5, 2011*

**physics**

Which of the following statements is true for an inelastic collision? A. Both momentum and kinetic energy are conserved. B. Momentum is conserved, but kinetic energy is not conserved. C. Kinetic energy is conserved, but momentum is not conserved. D. The amount of momentum lost...
*March 5, 2011*

**physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 4.00 s. If the magnitude of the momentum of the lighter cart after the push is P, the magnitude of the momentum of the heavier cart is ...
*March 5, 2011*

**Physics**

Two carts, one twice as heavy as the other, are at rest on a horizontal frictionless track. A person pushes each cart with the same force for 6.00 s. If the kinetic energy of the lighter cart after the push is K, the kinetic energy of the heavier cart is A. 1/4 K B. 1/2 K C. K...
*March 5, 2011*

**chemistry**

calculate the mass of water produced when 3 g HCL reacts with excess sodium carbonate
*March 3, 2011*

**trig**

y=sin pie divied by 2 theta
*March 2, 2011*

**chemistry**

A pair of students performs an experiment in which they collect 27 g CaO from the decomposition of 41 g CaCO3. Are these results reasonable? Explain your answer using percentage yield.
*March 1, 2011*

**Government**

Do you think that governors should have significant powers? I know there are about 14 states, Texas being one that their governor has very little power. But why should these governors be allowed more?
*February 26, 2011*

**math**

I have $6400 to invest at 8% and 6%. What amount is to be invested at 8% in order to earn double the interest of 6%
*February 24, 2011*

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