Thursday
November 27, 2014

Posts by bob


Total # Posts: 2,482

math
find two numbers in the ratio of 2 to 5 that have a sum of 119.
May 28, 2013

Math
resolve the vector v=[7, 9] into rectangular components, one of which is in the direction of [6, 2]
May 27, 2013

Math
Name 3 consecutive odd integers (X,X+2,X+4) The difference between 2X and X+4 =(X+2)-24 Can you show HOW to solve?
May 24, 2013

Social Studies
#2-C #3-D
May 24, 2013

algebra!!!! please help me!!!!
@Steve it's not √2+√3+√5,,, it's √(2+√3+√5)...
May 22, 2013

algebra!!!! please help me!!!!
A number is called algebraic if there is a polynomial with rational coefficients for which the number is a root. For example, √2 is algebraic because it is a root of the polynomial x^2−2. The number √(2+√3+√5)is also algebraic because it is a root...
May 22, 2013

statistics
So, trying to cheat on your edx exam? You'll only feel bad. Go back to the notes and work it out.
May 18, 2013

LA
help please
May 16, 2013

LA
I don't know:(
May 16, 2013

LA
2.what is the description of the theme of article lottery winners who lost their millions? A: many lottery winners have lost their money. B:money is the key to the American dream. C: sudden wealth can cause problems.
May 16, 2013

math
Idk
May 14, 2013

physics
A person takes a trip, driving with a constant speed of 92.5 km/h except for a 20.0 min rest stop. If the person's average speed is 71.2 km/h, how much time is spent on the trip and how far does the person travel?
May 14, 2013

language
1.c 2.b
May 12, 2013

math
Points A and B are on the top and bottom edges of a cylindrical roll of paper of height 8 and circumference 12. A and B are diagonally opposite each other. The paper is cut along line C and opened out. How far apart are A and B on the flat surface?
May 11, 2013

Math algebra
Let N be the sum of all positive integers q of the form q=p^k with prime p, such that for at least four different integer values of x from 1 to q, x^3−3x≡123(modq). What are the last 3 digits of N?
May 11, 2013

Math
There is an expression some people use that says, “What you put into it is what you get out of it.” People might use this expression to describe your skills at a sport or activity and how that relates to the amount of time and effort you spend practicing that ...
May 10, 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 9, 2013

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

Chemistry
ya
April 22, 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

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

7th Grade Language Arts!
1.a 2.c 3.c
April 3, 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

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

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

math
uh
March 21, 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

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

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