Wednesday
August 27, 2014

Posts by Todd


Total # Posts: 131

Algebra
what is the magnitude of a vector with an initial point (2,6) and a terminal point (14,11)
May 19, 2014

research
How is the Spivak and Sharp (2008) study a replication of the prior study by Bales and colleagues (2005)?
March 14, 2014

math
A fisherman has caught a 5kg fish with a line and is lifting it vertically out of the water. While the fish is still in the water he raises it at a constant speed of 0.4 ms^-1. If the water resists this motion with a force of 6N, what is the tension in the line?
October 26, 2013

physics
three antinodes witha peak to peak displacement of 3 cm are observed on a vibrating string of length l and linear density the hanging mass is m what is the velocity of the propagation of transverse waves of the string
July 25, 2013

Physics
200 g of ic is at -5C is dropped into a container containing water at 65C. If the final temperature of the mixture reaches 21C, what mass of water must be present in the container?
July 22, 2013

statistics
Do students tend to improve their SAT mathematics (SAT-M) score the second time they take the test/
July 16, 2013

Math
forgot to convert so it will be 648.45N?
July 4, 2013

Math
right is 243N ?
July 4, 2013

Math
A simply supported beam is 6 meters long and has a mass of 15 kg/m of length. It carries loads = 180 N and 270 N at points 1.2 meters and 3.6 meters from the left end respectively. Find the reactions.
July 4, 2013

science physics
1.) What is the Magnitude of the electrostatic force on a +5 C charge 1.75 m to the left of a -2.5 C charge? (show your work) 2.) In What direction does the force on the +5 C charge act? 3.)Calculate the magnitude of the electric field of the -2.5 C charge at the location of ...
May 14, 2013

statistics
Find the standard deviation, Sigma, for the binomial distribution which has the stated values of n and p. Round your answer to the nearest hundredth. n = 639; p = 0.7
April 14, 2013

Finance
A company has total assets of $8,500,000 and its total turnover of 2.35 times. If the return on assets is 9 percent, what is its profit margin? Please help with a formula?
March 18, 2013

Chemistry
Comment on the relative acidities of h3po4 and the h2po4 ion? I don't understand what this question is asking? Would H3PO4 is a strong acid and will completely dissociate into ions in aqueous solution suffice?
February 26, 2013

Algebra
I need to find the slope of a ladder that is leaning against a building. The bottom of the ladder is 9 ft from the building and the top of the ladder is 16 ft above the ground.
February 19, 2013

English
Did you enjoy the Southern hospitality? What are the adjectives in that sentence?
January 9, 2013

Math 12th grade
Find the sum of each infinite series, or state that the sum doesn'nt exist 1/7+5/14+25/28+
December 16, 2012

ricon high school
A 6 kg ball is thrown by a catapult at 30 m/s. what is the ball's momentum?
December 15, 2012

Statistics
Tony’s father, an accountant, has been listening to Tony tell him about Type I errors and α = .05. He responds: “.05? That means you’re making an error one time in twenty! If I made errors 5 percent of the time I’d be out of a job so fast it would make...
December 2, 2012

Chemistry
second part = B
November 29, 2012

programming
Create an application in C# that will accept sales information and calculate the total bill. There are 3 products which can be sold: Product 1 with price of $2.98 Product 2 with price of $4.50 Product 3 with price of $9.75 The application should prompt the user for product and...
September 30, 2012

2nd grade math
____= 8+2?
September 26, 2012

math
Is 13/0 considered to be undefined?
September 23, 2012

math
I have 8 ones and 2 hundreds. I am between 270 and 280. what number am I?
September 13, 2012

math
i have fewer ones than tens. the value of my tens is 30.what two numbers can i be
September 5, 2012

Math
i got 24.81 would that be correct?
August 21, 2012

please check
y^2=1/2x^3 y=ã1/2x^3 y=1/1.41x^(3/2) derivative dy/dx=3/2.82^(1/2)
August 21, 2012

Math
Please help: find the length of the curve 2y^2 = x^3 from the origin to x=10.
August 21, 2012

Math
the acceleration of a particle is defined by the equation a= 4-t^2 with an initial velocity of two millimeters per second. Find the exact equation for the position of the particle if its initial position was zero.
July 20, 2012

algebra
during the first part of a trip, a conoeist travels 70 miles at a certain speed. the canoeist travles 7 miles on the second part of the trip at a speed of 5 mph slower. the total time for the trip is 5 hrs. Ehat is the speed on each part of the trip?
July 6, 2012

algebra
The speed of a passenger train is 16 mph faster than the speed of a freight train. The passenger train travles 300 miles in the same time it takes the freight train to travel 220 miles. find the speed of each train
June 22, 2012

Calculus
x^2-5/x lim x=0^+
April 26, 2012

calculus
Find the total differential for f(x,y,z)= cos(4x+3y+2z+1)
April 23, 2012

calculus
Just doing example questions to better understand. Find all first and second partial derivatives for the function u= xy^2+x^2y
April 23, 2012

PHI 103
In the truth table for an invalid argument
April 14, 2012

calculus
find dy/dx if y= (x^5)(e^(x^4))
March 6, 2012

math
hmmm bobpursly, i doubt a "basketball" player, one word not two,would pull out a compass mid court to calculate, but it is exactly what happens in their mind, if not just as an approximation of the definitive exact. I'm sure that there are several "...
February 17, 2012

geometry
An airplane descends 3.5 miles over a horizontal distance of 25 miles. How far did the plane actually travel?
January 18, 2012

Math
2 2/5 hours is 132 minutes 132*3/8 is equal to 45 3/4 minutes
December 30, 2011

math
(624*3)/8
December 30, 2011

ALGEBRA 1 help
That's correct.
December 30, 2011

ALGEBRA
Correction* The middle number is -5 and so the factors will have - signs rather than + signs
December 30, 2011

ALGEBRA
multiply the term on the left with the term on the right. In this problem, 2*2 That will give you 4. Now you need to find two numbers that will multiply to 4, and also add to equal the middle number. In this problem the middle number is 5. So, we need two numbers that multiply...
December 30, 2011

MATH
Any fraction is undefined when the denominator is equal to zero. In this problem the denominator is 2x-6. In order to find what value of x is needed to make the denominator zero, set it equal to x and solve. 2x-6=o 2x=6 x=3 Therefore, this fraction is undefined (or has a ...
December 30, 2011

math
x+(x+250)=420 2x+250=420 x=85 85+250=335 Therefore, 335 acres of corn and 85 acres of pumpkins
December 30, 2011

math
335 acres of corn 85 acres of pumpkins
December 30, 2011

math
x+x+3x+3x=44 8x=44 x=5.5 L=3x=16.5cm W=x=5.5cm
December 30, 2011

geometry
9z+9=180 9z=171 z=171/9 z=19
December 30, 2011

finance
Company sales and profits grow at a rate of 30% per year; at the end of 4 years (t4) the growth rate drops to steady 5%. Company recently paid a dividend of $1 per share, and the required return is 20%. What is the value of one share today (t0)? assuming dividends grow at same...
December 29, 2011

algebra
Marlene drive 540 miles to visit friend. drive for 3 hours then stopped for gas, then drive 4 more hours stopped for lunch. how many more hours do I drive if my average speed for trip is 60 miles per hour ? How would I write an equation?
December 8, 2011

AP Government
Is this not what she was looking for? Sorry.
November 2, 2011

AP Government
House of Representatives Standing Committee Operation The House of Representatives has many types of committees.. They include standing committees, subcommittees, select committees, study committees, and advisory committees. This memo focuses on standing committees. The House ...
November 2, 2011

MATH
MIKE HAS 2 MATS THAT ARE IN THE SHAPE OF TRIANGLES THE SCALE FACTOR OF THE 2 TRIANGULAR MATS IS 7/9 WHAT IS THE RATIO OF THE PERIMETERS?
November 2, 2011

Physics
A 95 kg rowboat is initially at rest, until it is pulled toward the dock with a rope with a tension of 30.0 N. The dock is higher than the boat, and the rope makes an angle of 25° at the place where it meets the boat. What is the acceleration of the boat? 0.080 m/s2 0.29 m...
October 31, 2011

math
23x17 in expanded algorithm
September 22, 2011

calculus
does the sequence a=(2n)! / n! converge? Explain
September 1, 2011

Statistics
A game is played using one die. There is a$1 charge to play the game. If the die is rolled and shows a five, the player receives $6 back ( a profit of $5 and the original $1). If any other number shows, theplayer loses the original $1. What is the player's expected value...
July 16, 2011

Statistics
A game is played using one die. There is a$1 charge to play the game. If the die is rolled and shows a five, the player receives $6 back ( a profit of $5 and the original $1). If any other number shows, theplayer loses the original $1. What is the player's expected value...
July 16, 2011

Statistics
There are 6 batteries. Two are defective. If you pull out two batteries, what is the probability that neither are defective? Is this how you solve it? 4/6 X 3/5
June 20, 2011

rainwater
What would cause rain water puddle to turn black in color
June 19, 2011

physics
MAN WHY YOU THROWIN BALLS MAN I DONT EVEN KNOW
May 30, 2011

calc
Let f(3) = 0, f '(3) = 6, g(3) = 1, and g '(3) = 1/3. If h(x) = f(x)*g(x), find h '(3).
April 30, 2011

calculus
Choose the correct quantity to fill in the blank: Integral_______ dx = (ax2 - a2)4 + C.
April 30, 2011

calculus
Choose the correct quantity to fill in the blank: Integral_______ dx = (ax2 - a2)4 + C.
April 30, 2011

Math
Len flipped a coin 3 times and got a head each time. What are the chances he will get a tail on his next toss? Explain reasoning. would it be 50/50 because there are two sides
March 21, 2011

Algebra Help please
12(74y - (6+5Y - 8Z) = Please show work
March 16, 2011

Algebra
12(74y - (6+5Y - 8Z) = Please show work
March 15, 2011

Algebra
12(74y - (6+5Y - 8Z) = Please show work
March 15, 2011

Algebra
12(74y - (6+5Y - 8Z) = Please show work
March 14, 2011

Math
Mrs Sue thank you and you are the best
March 10, 2011

Math
Does anyone know the old formula to calculate a hourly raise from a percentage; I totally forgot. The employee makes $10.50 an hour and is receiving a 1.1% increase.
March 10, 2011

Chemistry
"A voltaic cell is constructed by immersing a strip of sillver metal in a 1.0 MAgNO3 solution and a strip of cadmium metal in a 1.0M Cd(NO3)2 solution. The circut is completed by a wire and a salt bridge in the usual way. a. Write the balanced overall cell reaction. b. ...
March 10, 2011

physics
Outside air generally contains some water vapor (typically 1-2% by mass). Does it take more, less, or the same heat to raise the temperature of 1kg moist air than is needed to raise the temperature of 1kg dry air by the same amount?
February 8, 2011

physics
water 20 degrees celsius flows through a 25 mm diameter pipe at a rate of 50 liters per minute. is this laminar or turbulant flow or both?
February 8, 2011

math
250mg is equal to what percent of a gram or grams
February 1, 2011

Stats
Use this table to answer the questions. Height (in inches) Frequency 50-52 5 53-55 8 56-58 12 59-61 13 62-64 11 1. Identify the class width. 2. Identify the midpoint of the first class. 3. Identify the class boundaries of the first class. 4. Give the relative frequency for ...
December 16, 2010

physics
Take the mass of the Earth to be 5.98 × 1024 kg. If the Earth’s gravitational force causes a falling 52 kg student to accelerate downward at 9.8 m/s2, determine the upward accelera- tion of the Earth during the student’s fall. Answer in units of m/s2.
November 28, 2010

Statistics/Math- Please Help
The company offers two types of sales: 1. Internet sales; 2. Store sales. The marketing research manager believes that the Internet sales are more than 10% higher than store sales. The null hypothesis would be: A. Pinternet–Pstore >.10 B. Pinternet–Pstore <.10 ...
November 16, 2010

english
Yes it affects your life. However, that is pretty broad. 1. Confidence 2. Social ability
November 16, 2010

Statistics/Math- Please Help
The company offers two types of sales: 1. Internet sales; 2. Store sales. The marketing research manager believes that the Internet sales are more than 10% higher than store sales. The null hypothesis would be: A. Pinternet–Pstore >.10 B. Pinternet–Pstore <.10 ...
November 16, 2010

math
x=6 6( 3 + 6x)= 234 (3+ 6x)= 39 6x= 36 x=6
November 16, 2010

chemistry
The Ka of stearic acid is 1.3 x 10^-5. what is the Kb of stearate?
November 15, 2010

Chemistry
What is the mass of boiling water and the mass of tub water?
November 4, 2010

Applied statistics for business and economics
Only 0.02% of credit card holders of a company report the loss or theft of their credit cards each month. The company has 15,000 credit cards in the city of Memphis. Use the Poisson probability tables to answer the following questions. What is the probability that during the ...
October 24, 2010

Physics
Block A and block B (see figure below) are forced together, compressing a spring (with spring constant k = 2220 N/m) between them 2 cm from its equilibrium length. The spring, which has negligible mass, is not fastened to either block and drops to the surface after it has ...
October 7, 2010

math
u divided by 7 =3
September 11, 2010

Physics
Nitrogen gas is introduced into a large deflated plastic bag. No gas is allowed to escape, but as more and more nitrogen is added, the bag inflates to accommodate it. The pressure of the gas within the bag remains at 1 \rm atm and its temperature remains at room temperature (...
September 1, 2010

Physics
A 1.10 kg} block of wood sits at the edge of a table, 0.790 m above the floor. A 1.10×10−2 kg} bullet moving horizontally with a speed of 725 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
August 3, 2010

Physics
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 9.7×10−2 kg. The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits the block, ...
August 3, 2010

Physics
A 90 kg astronaut and a 1100 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.24 m/s directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. What was ...
August 3, 2010

Physics
Fairgoers ride a Ferris wheel with a radius of 5.00 {\rm m} . The wheel completes one revolution every 31.5 s What is the average speed of a rider on this Ferris wheel? If a rider accidentally drops a stuffed animal at the top of the wheel, where does it land relative to the ...
July 1, 2010

Physics
You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the arrow has gone straight upward to a height of 32.0 m above its launch point. What is the initial velocity and how long did it take for the arrow to reach 16.0 m above the launch point?
June 30, 2010

Phy
You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the arrow has gone straight upward to a height of 32.0 m above its launch point. What is the initial velocity and how long did it take for the arrow to reach 16.0 m above the launch point?
June 30, 2010

Physics
You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the arrow has gone straight upward to a height of 32.0 m above its launch point. What is the initial velocity and how long did it take for the arrow to reach 16.0 m above the launch point?
June 30, 2010

american government
I am having trouble finding the answer to this same exact question. The word "legitimate" is what deters me from answering A without hesitation.
June 23, 2010

Chem.
If 229 g of Pb(NO3)2 and 190 mL of 1.68 M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many grams of Pb(NO3)2 remain? Round your answer to 3 significant figures. Pb(NO3)2(aq) + 2NaI(aq) → PbI2(s) + 2NaNO3(aq)
February 26, 2010

Math
In one three day weekend, the daily high temperature had a median value of 73. The mean temperature was 74.33 and the range of temperatures was 14. What were the three weekend daily high temperatures?
December 4, 2009

pre- algebra(MATH)
7(2p+1)=14P+7
November 5, 2009

4th Grade Math
26x22
October 12, 2009

Algebra
A bag of M&Ms contains 12 red, 11 yellow, 5 green, 6 orange, 5 blue, and 16 brown candies. What is the probability that if you choose 2 M&Ms from the bag (one after the other) without looking, you will choose 2 yellow ones?
June 3, 2009

busniess
What are the four functions of management?
April 7, 2009

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