Tuesday

October 13, 2015
Total # Posts: 2,720

**Life science**

How does the sun allow you to Run the mile
*May 8, 2013*

**Math**

An elevator named L in "63 Building" in Seoul is notorious for its low speed. It takes 3 seconds for L just to move one floor. It takes another 20 seconds for it to have its door open and close automatically. What is even more frustrating, is that the elevator ...
*May 7, 2013*

**Math**

A woman rides her bicycle from her house to and from a lake. It takes her 1 1/2 hours to ride to the lake and 1 3/4 hours to ride back. She rides downhill at 12 kilometers per hour, on level ground at 8 kilometers per hour, and uphill at 6 kilometers per hour. What is the ...
*May 7, 2013*

**Math**

Two cars run at constant speeds around a one-mile racetrack. The faster car passes the slower car every two minutes if the cars run in the same direction. If they run in opposite directions, they meet every 15 seconds. Find the speed of the faster car in miles per hour.
*May 7, 2013*

**English II**

"Base Details" If I were fierce, and bald, and short of breath, I’d live with scarlet Majors at the Base, And speed glum heroes up the line to death. You’d see me with my puffy petulant face, Guzzling and gulping in the best hotel, Reading the Roll of ...
*May 7, 2013*

**Math (Probability)**

Four players are playing a game involving choosing squares on a grid of size 3×8. Each player chooses a random square on the grid, then all players reveal their choices and a token is placed in the center of each of these squares. The probability that the tokens form the...
*May 6, 2013*

**5th grade math**

It is 3,556.
*May 6, 2013*

**Math (Algebra)**

What is the remainder when 5×55×555×…×555,555,555 is divided by 100?
*May 6, 2013*

**Math**

A candy store currently sells almonds for $8.50 per kilogram and peanuts for $4.50 per kilogram. It wants to create 20 kilograms of mixed nuts that will equivalently sell for $5.30 per kilogram. How many kilograms of almonds should they use?
*May 6, 2013*

**Math (Algebra)**

If the sum of 3 non-zero distinct real numbers a, b, and c is 2, and the two sets {a,b,c} and {1/a,1/b,1/c} are the same, what is the value of a^2+b^2+c^2? Note: Two sets are the same if there is a one-to-one correspondence between their elements. For example, the sets {1,2,3...
*May 6, 2013*

**Math (Algebra)**

The ratio of men to women in the applicants for Lamborghini this year is 4:3, while the ratio of men to women in the successful applicants is 5:3, and the ratio of men to women in the rejected pile is 1:1. If the number of successful applicants is 176, what is the number of ...
*May 5, 2013*

**Math (Algebra)**

The sum of beads owned by John, Bob, and Dale is 273. The ratio of John's beads and Dale's is 8:5, and Dale's beads are 10/13 times Bob's. How many more beads does John own than Dale?
*May 5, 2013*

**Phy. Sci.**

What are the forces on two charges of +0.43 C and +1.4 C, respectively, if they are separated by a distance of 3.7 m?
*May 3, 2013*

**Math (Trigonometry)**

Given that sin 53∘ = T, how many values of N, subject to 0 ≤ N ≤ 1000 are there, such that sin N∘ = T?
*May 3, 2013*

**Math (Algebra)**

How many distinct rational numbers can be expressed in the form a/b, where a and b are integers such that 1 ≤ a < b ≤10?
*May 3, 2013*

**Financial Accounting**

80880.49
*May 3, 2013*

**algebra1**

mr jones estimates his profit starting in 2006 will be given by the formula p=7t^2-14t+10 where t is number of years and p is the profit.if this formula is correct,when will mr.jones have a profit of more than $1000. please help
*May 2, 2013*

**English II**

"Base Details" If I were fierce, and bald, and short of breath, I’d live with scarlet Majors at the Base, And speed glum heroes up the line to death. You’d see me with my puffy petulant face, Guzzling and gulping in the best hotel, Reading the Roll of ...
*May 1, 2013*

**English II**

On a proud round cloud in a white high night. A. alliteration B. consonance C. assonance D. limerick
*May 1, 2013*

**physics**

A downhill skier is on top of a hill at a height of 30.00 meters. How fast will he be moving when he is at level portion at the bottom of the hill?
*May 1, 2013*

**math**

3/10
*April 30, 2013*

**Number Theory**

16 :)
*April 29, 2013*

**Math (Combinatorics)**

Thanks ravi and ashu :)
*April 29, 2013*

**Math (Combinatorics)**

In the plane, the points with integer coordinates are called lattice points. Suppose a flea in the plane jumps from one lattice point to another. Each jump is one unit to the right, one unit to the left, one unit up, or one unit down. If the flea starts at the origin and makes...
*April 29, 2013*

**Math (Combinatorics)**

How many 4 digit positive integers have the ones digit a multiple of 1, the tens digit a multiple of 2, the hundreds digit a multiple of 3 and the thousands digit a multiple of 4?
*April 29, 2013*

**Math (Geometry-Vectors)**

Let θ be the angle between two vectors v and u . If v*u =12, |v|=2, |u|=6√2 and 0∘<θ<180∘, what is the value of θ (in degrees)?
*April 29, 2013*

**Math (Geometry)**

Square ABCD has M as the midpoint of AB, N as the midpoint of BC, P as the midpoint of CD and Q as the midpoint of MP. If [AMNPDQ]=20, what is the value of [ABCD]? Details and assumptions [PQRS] refers to the area of figure PQRS.
*April 29, 2013*

**Math (Geometry)**

In right triangle ABC, we are given that ∠ABC=90∘ and AC=34. D is a point on line segment BC such that BD=12,DC=18. What is the length of AD?
*April 29, 2013*

**math**

So David, you mean, x + y = 11 x - y = 4 x = 7.5 y = 3.5 Then we need to substitute y into the original equation? x + 3.5 = 11 x = 7.5 x - 3.5 = 4 x = 7.5 Adding the values lead x = 15?
*April 29, 2013*

**Math (Quadratic Function)**

Suppose p(x)=ax^2+bx+c is a quadratic polynomial satisfying p(7)−p(3)=214. Determine the value of p(9)−p(1).
*April 28, 2013*

**English**

When two words in a poem are spelled similarly, but do not have the same sound, the type of rhyme is called_______________. A. eye B. end C. internal
*April 26, 2013*

**Math**

A polymomial p(x) = ax^2 + bx + c where a, b, c are some rational, has 1 + root 3 as one of the zeros and also p (2) = - 2, Find values of a, b and c. Please work the solution. Tried it many times but still can't get the answer/ The answer is a = 1, b = -2 and c = -2.
*April 26, 2013*

**Math**

A polymomial p(x) = ax^2 + bx + c where a, b, c are some rational, has 1 + root 3 as one of the zeros and also p (2) = - 2, Find values of a, b and c. Please work the solution. Tried it many times but still can't get the answer/ The answer is a = 1, b = -2 and c = -2.
*April 26, 2013*

**Math**

A polymomial p(x) = ax^2 + bx + c where a, b, c are some rational, has 1 + root 3 as one of the zeros and also p (2) = - 2, Find values of a, b and c. Please work the solution. Tried it many times but still can't get the answer/ The answer is a = 1, b = -2 and c = -2.
*April 26, 2013*

**Math**

A polymomial p(x) = ax^2 + bx + c where a, b, c are some rational, has 1 + root 3 as one of the zeros and also p (2) = - 2, Find values of a, b and c.
*April 25, 2013*

**Solve the following polynomial equati**

Solve the following polynomial equation for x : x^2 - 2( a+2)x + (a + 1)(a + 3).
*April 25, 2013*

**Math Please help ASAP**

Just follow the rule LCM(X, Y) * HCF (X,Y) = Product of two numbers (X,Y).
*April 25, 2013*

**ALGEBRA!!!!**

How many distinct integer values of N between 1 and 1000 are there, such that N=4a+b+4c and 2N=7a+6b+7c for some positive integers a, b and c?
*April 25, 2013*

**Science....Need Help!!!**

Greenhouse gases
*April 24, 2013*

**statistics**

$10,126.65
*April 23, 2013*

**Physics**

If you've ever watched sailing, you will sometimes see a sailor hanging off the side of the boat, for example in this shot from the movie "The Thomas Crown Affair." Eventually, of course, the sailboat tips over so far that a person cannot keep it balanced. ...
*April 22, 2013*

**Physics**

Climbing to the top of Mount Everest is hard. But, it's slightly easier than you might think as people weigh less as they climb to the top. Let WE be a person's weight on top of Mount Everest and WS be their weight at sea level. What is the value of 1−WE/WS? ...
*April 22, 2013*

**Math (Percent discount)**

With the holiday approaching, Nancy's Closet is having a sale, where all their clothes are 40% off. Mary, who works there, can get a further staff discount of 30% off the sale price. What is the total percent discount that Mary gets?
*April 22, 2013*

**algebra 2**

During the first part of a trip a canoeist travels 26 miles at a certain speed. The canoeist travels 8 miles on the second part of the trip at a speed 5 mph slower. Total time is 3 hours. What was the seed on each part of the trip
*April 21, 2013*

**Physics**

voltage
*April 18, 2013*

**physics**

hi answer is pi
*April 17, 2013*

**Calculus**

actually theres an integral sign. at the top of the sign theres a 3. At the bottom of it, theres a 2.
*April 16, 2013*

**Calculus**

∫3 at top and 2 at bottom x/x^2+1 dx = ? if you could show steps that would be great thanks
*April 16, 2013*

**science**

Calculated how many grams of methane (CH4) are in a sealed 80 mL flask at room temperature (22ºC) and 780 mm Hg of pressure. Show all your work.
*April 15, 2013*

**Physics**

A small statue has a height of 3.8 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.9 cm tall, and located 14 cm away from the mirror. Find the focal length of the mirror.
*April 11, 2013*

**math**

suppose your salary was 28,500 in 2010 and 32,000 in 2016. Assume your salary follows a linear growth pattern.
*April 11, 2013*

**Physics**

The world record for revolutions per minute for an ice skater is 308 RPM, held by Natalia Kanounnikova. You can see a video of the spin here. When she starts the spin and her leg is extended, she's going somewhere between 1-2 revolutions per second. Let's average this ...
*April 8, 2013*

**Physics**

You wish to swim across a small river to your friend on the other side. The river is 30 m wide and you begin to swim straight across it at a speed of 1 m/s. The current in the river is 0.5 m/s and so the river carries you downriver as you swim. How far downriver in meters are ...
*April 8, 2013*

**Physics**

Recently there has been technological advances that allow for 3-D imaging up to kilometers away from an object. This can be done by using laser light that bounces off an object. By measuring the time it takes the laser light to get to the object and back, one can construct a ...
*April 8, 2013*

**math**

what is the formula to calculate the area of a trapziode.
*April 6, 2013*

**math**

8.27
*April 6, 2013*

**Calculus (Gr.12) Math**

I am not sure how to do this question I know I have to take the derivative but then I am left w/ to unknowns. If a projectile is shot up hill the distance (range) of the landing point up the hill depends on the initial speed of the projectile,v, the angle of inclination, a, ...
*April 6, 2013*

**Quantum Physics**

8D ,8E,6C,6D and 9
*April 6, 2013*

**ap calculus**

a particle moves along the x axis in such a way that its acceleration at time t, t>0 , is given by x(t)= (ln x)^2. at what value of t does the velocity of the particle attain its maximum
*April 5, 2013*

**help with chemistry**

Uranium hexafluoride is a solid at room temperature, but it boils at 56°C. Determine the density of uranium hexafluoride at 67°C at 759 torr. ___g/L I got 12.7 i do not know if this is correct. Please help
*April 5, 2013*

**college algebra**

solve the equation 8^x=2
*April 3, 2013*

**Math (Combinatorics)**

A newly designed international airport is planning to label its gates. Each gate must be assigned a letter from the alphabet from A to M (13 in all), and a number from 1 to 15. To avoid confusion, any two gates must be assigned a different letter, or a different number (or ...
*April 3, 2013*

**Physic 30**

14.77
*April 3, 2013*

**science**

1mole of liquid water at 25 c and 1 atm forms 1 mole of steam at 100 c and 1 atm. the molar heat capacity of water 373 k is 40.79kj/mol and the molar heat capacity of water is 75.3 J. assume ideal gas behavior for steam. Calculate delta U, delta H and delta S
*March 29, 2013*

**Math**

-5(t-8)-(t+7)=6
*March 28, 2013*

**math**

The real answer is 69
*March 28, 2013*

**algebra1**

explain in more detail plz
*March 28, 2013*

**english**

can you help me find facts and figures why teens should voulunteer if possible how many teens like volunteering i apreciate your help.
*March 25, 2013*

**math**

15.2
*March 25, 2013*

**economics**

Maria can read 20 pages of economics in an hour. She can also read 50 pages of sociology in an hour. She spends 5 hours per day studying. a. Draw Maria's production possibilities frontier for reading economics and sociology. b. What is Maria's oppurtunity cost of ...
*March 24, 2013*

**Physics**

!@#$%^& off
*March 24, 2013*

**MATH**

yo waz up I got 3/4
*March 24, 2013*

**MATH**

3/4 hi
*March 24, 2013*

**English**

Why should grade 8 students have to do volunteer hours to graduate grade 8? Please provide me with atleast 6 points and so I can expand on it. Your help is very much appreciated!:)
*March 23, 2013*

**physics**

The above answer is some ass
*March 22, 2013*

**Math**

How to find the exact value of tan(sin^-1x/2) I'm having trouble with finding the inverse of sin x/2 value.
*March 19, 2013*

**Math**

Thanks.
*March 19, 2013*

**Math**

What is the inverse trig function cotangent of square root of 3/3? What is the value?
*March 19, 2013*

**Combinatorics**

Bob is at an amusement park with 10 different rides. He only has time to go on 3 rides, before he needs to head back for his curfew. If he only wants to go on each ride a maximum of one time, how many different ways are there to go on 3 rides?
*March 19, 2013*

**Chemistry**

15.5 M
*March 18, 2013*

**physics**

A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 15.5 cm in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a θ = 19.0° angle with the vertical as indicated, what is the net ...
*March 15, 2013*

**microeconomics**

20
*March 15, 2013*

**To the Person who just posted an English question:**

Need help, is the name yun ok inappropriate help!
*March 12, 2013*

**Math**

Of 30 students, 12 play football, 17 play soccer, and 5 play both, how many play neither?
*March 12, 2013*

**math**

kevin drew a scale drawing of his living room,The actual room is 16 feet long.If the room is 12 inches long in the drawing,what is the scale of the drawing?
*March 6, 2013*

**civics**

At the Constitutional Convention of 1787, a major conflict between the delegates centered on the issue of __________.
*March 6, 2013*

**Social Studies**

How did the immigrants who came to the United States between 1820 and 1860 change the character of the country?
*March 4, 2013*

**English**

I say 3. I go to a museum to look at pictures...
*March 4, 2013*

**Science**

i need help on a compound machines
*March 2, 2013*

**chemisty**

found the answer to be 36.03 ml
*February 28, 2013*

**chemisty**

Hydrogen peroxide can be prepared by the reaction of barium peroxide with sulfuric acid according to BaO2(s)+H2SO4(aq)=BaSO4(s)+H2O2(aq) How many milliliters of 5.00 M H2SO4(aq) are needed to react completely with 30.5 g of BaO2(s)?
*February 28, 2013*

**Math**

Is this true or false? To expand the binomial (x2 + 3)6, use the row of Pascal's triangle that has coefficients 1, 5, 10, 10, 5, 1.
*February 28, 2013*

**math**

how to solve: tan(sin(x))=tan(x)sin(x)?
*February 27, 2013*

**physics**

a 3000 pound car is parked on a hill at an angle of elevation of 16 degrees. how much force must the brakes exert to keep the car from rolling down the hill?
*February 27, 2013*

**Ms. Sue please help**

What is the highest temperature in the exosphere.
*February 26, 2013*

**math**

Hahaha! Oh Steve you crack me up with all that verbage and question asking. Anyways the question said to find a14, NOT a11. a14 = 15/199. So out of the wordy answer choices Paige gave, the answers C.
*February 26, 2013*

**science**

what is the structural formula for a) 3,3,4-trimethyloctane B) 2-methyl-1-pentene
*February 26, 2013*