Wednesday

June 29, 2016
Total # Posts: 1,557

**Physics**

A railroad car with a mass of 1.86 104 kg moving at 2.80 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.40 m/s. (a) What is the speed of the three joined cars after the ...
*October 22, 2012*

**Physics**

oh nvm
*October 22, 2012*

**Physics**

are you sure the 0.138 shouldn't be .0138?? and the answer be 1.7e-6??
*October 22, 2012*

**Physics**

A 5.9 g coin sliding to the right at 27.6 cm/s makes an elastic head-on collision with a 17.7 g coin that is initially at rest. After the collision, the 5.9 g coin moves to the left at 13.8 cm/s. (a) Find the final velocity of the other coin. (b) Find the amount of kinetic ...
*October 22, 2012*

**Physics**

Thanks Elena!! CASEY, you da finest.
*October 22, 2012*

**Physics**

A 1.08 kg skateboard is coasting along the pavement at a speed of 4.60 m/s when a 1.19 kg cat drops from a tree vertically downward onto the skateboard. What is the speed of the skateboard-cat combination?
*October 22, 2012*

**French 2**

Which is an example of a superlative sentence? Answer Le français est fantastique. Le français est plus fantastique que l'anglais. Le français est la plus fantastique de tous les langues.
*October 21, 2012*

**Physics**

A 0.17 kg baseball moving at +20.80 m/s is slowed to a stop by a catcher who exerts a constant force of -376 N. How long does it take this force to stop the ball? How far does the ball travel before stopping?
*October 18, 2012*

**statistics**

random sample of n = 16 scores is selected from a normal distribution with a mean of μ = 50 and standard deviation of σ = 10. a. what is the probability that the sample mean will have a value between 45 and 55? b. what is the probability that the sample mean will ...
*October 15, 2012*

**Physics**

Those were all wrong, I don't get it.
*October 14, 2012*

**Physics**

A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally, striking the ground a distance x = 0.81 m from the end of the track after falling a vertical distance h2 = 1.03 m from the end of the track. (a) At what...
*October 14, 2012*

**Physics**

Thank you!!
*October 14, 2012*

**Physics**

Starting from rest, a 11.50 kg suitcase slides 3.18 m down a frictionless ramp inclined at 40° from the floor. The suitcase then slides an additional 5.22 m along the floor before coming to a stop. (a) Determine the suitcase's speed at the bottom of the ramp. (b) ...
*October 14, 2012*

**Physics**

A skier of mass 74.5 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 55 m up a 31° slope (assumed to be frictionless) at a constant speed of 2.0 m/s?
*October 14, 2012*

**Physics**

A 0.230 kg block on a vertical spring with spring constant of 4.25e3 N/m is pushed downward, compressing the spring 0.048 m. When released, the block leaves the spring and travels upward vertically. How high does it rise above the point of release?
*October 14, 2012*

**Econ**

Just a suggestion: Since there is a price floor on wheat (meaning that wheat cannot be sold under a certain price), wheat would be more expensive. In turn the people who make Healthy Wheat Cookies would produce less and would raise the price of Healthy Wheat Cookies, to make ...
*October 13, 2012*

**random math queastion**

√x^2+2 Is this possible as is?
*October 13, 2012*

**Physics**

An 52.0 N box of clothes is pulled 7.3 m up a 30.0° ramp by a force of 103 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.
*October 11, 2012*

**Physics**

Nevermind!! I got it! Thank you so much
*October 11, 2012*

**Physics**

I got 571, but it says it's wrong!!
*October 11, 2012*

**Physics**

An 52.0 N box of clothes is pulled 7.3 m up a 30.0° ramp by a force of 103 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.
*October 11, 2012*

**Calculus**

when I plug in the ordered pair (.25, 2)I get a zero in the denominator, was I doing that wrong?
*October 8, 2012*

**Calculus**

arcsinxy = 2/3 arctan4x find dy/dx at the point (1/4, 2)
*October 8, 2012*

**math**

name a possible set of scores for 15 students that would result in an average of 66%
*October 7, 2012*

**colleGe math**

y=-2|x| actually I'm sorry I left some of the details out. It says to let x=-3,-2,-1,0,1,2 and 3. Not sure what to make of this..
*September 29, 2012*

**colleGe math**

y=-2|-3| was the intended equation
*September 29, 2012*

**colleGe math**

y=-2|x| Will someone please explain how I'm supposed to graph this?
*September 29, 2012*

**collEge math**

x^3-27
*September 29, 2012*

**colLege math**

(2x-1)(x^2-4x+3)
*September 29, 2012*

**coLlege math**

√6x * √3x^2
*September 29, 2012*

**coLlege math**

It is done like this. :√6x
*September 29, 2012*

**coLlege math**

√6x*√3x^2
*September 29, 2012*

**cOllege math**

Any chance for help on this?
*September 29, 2012*

**cOllege math**

14x^2+5-[7(x^2-2)+4]
*September 29, 2012*

**College math**

(-30a^14b^8/10a^17b^-2)totally lost on me??
*September 29, 2012*

**7th grade socal studies**

I need help in 8. Please help. the question itself is worth 50 points. Yeah it sounds crazy but it is my mid term exam which is 25 or 50 points each but is worth only 300 points.
*September 26, 2012*

**Statistics**

AJ DAVIS is a department store chain, which has many credit customers and wants to find out more information about these customers. A sample of 50 credit customers is selected with data collected on the following five variables: LOCATION (Rural, Urban, Suburban) INCOME (in $1,...
*September 16, 2012*

**finance**

Knight has a property tax base with an appraised value consisting of $142,000,000 of taxable real property and $78,000,000 of taxable personal property. The assessment ratio is 50%. Exemptions for the elderly reduce assessed value by $3,000,000. The city has a planned budget ...
*September 9, 2012*

**Physics**

40 miles per hour
*September 6, 2012*

**Finance**

Mr. Brown is in the 10% federal income tax bracket and wants to invest $8,000 in interest-earning assets. Mr. Black is in the 35% bracket and wants to invest $15,000. The current rate on a typical high-quality tax-exempt municipal bond is 5% and on a similar quality corporate ...
*September 2, 2012*

**math**

Can you write it in a sentence
*August 14, 2012*

**math**

Would this be a arithmetic sequence
*August 14, 2012*

**math**

how do you put it in a sequence
*August 14, 2012*

**math**

What is x?
*August 14, 2012*

**math**

a new automobile depreciated 20% of its value after 1 year. if the automobile is priced at $18,000 after 1 year, what was its cost when it was new?
*August 14, 2012*

**ap government**

what is confederation ?
*August 11, 2012*

**Chemistry**

Complete the following chemical reaction. Label any precipitate that forms. KCl(aq) + AgNO3 (aq) ¨KNO3 (aq)+AgCl(s)
*August 7, 2012*

**geometry**

One thousand raffle tickets are sold for 4.00 each. one grand prize of $800 and two consolation prizes of $ 100 each will be awarded. Jeremy purchases one ticket. Find his expected value.
*July 24, 2012*

**geometry**

The National Association for Women in Scienc asked recent high school grads if they had taken certain classes. of those surveyed, 95 said they had taken physics, 108 said they had taken chemistry and 12 said they had taken both. nine said they had taken neither. How many ...
*July 23, 2012*

**gemetry**

An identification code is to consist of two letters followed by six digits. How many different codes if repetition is permitted.
*July 18, 2012*

**geometry**

If the probability of seeing moose in a day in a certain region of Alaska is 0.74, what is the probability of not seeing any moose in a day there?
*July 16, 2012*

**geometry**

Write the compound statement in symbols Let r= The food is good p= I eat too much q= I'll exercise If the food is not good, I won't eat too much.
*July 11, 2012*

**geometry**

Write the compound statement in symbols Let r= The food is good p= I eat too much q= I'll exercise If the food is not good, I won't eat too much.
*July 11, 2012*

**geometry**

Determine which if any of the three statements are equivalent. Give a reason for your conclusion. 1) If the house is not white,then the house is not small. 2) If house is not white and the house is not small 3)It is false that the house is white or that the house is not small.
*July 11, 2012*

**geometry**

construct a truth table for (~p^q)__> p
*July 8, 2012*

**geometry**

Construct a truth table for (qvp)__> ~q
*July 8, 2012*

**geometry**

Construct a truth table for (~PVq)___> q
*July 6, 2012*

**geometry**

construct a truth table for p_____> ~q
*July 6, 2012*

**geometry**

Construct a truth table for (~pvq) ____>
*July 5, 2012*

**geometry**

Construct a truth table for p----> ~q
*July 5, 2012*

**GEOMETRY**

Determine AU (CUB) start by finding C' and B' then find CUB
*July 2, 2012*

**GEOMETRY**

Given u= (22,23,24,25,26,27,28,29,30,31,32) A= 22,24,26,28,30) and b = (23,24,25,28,29) FInd AUB. Do not skip the answer. show your work finding A then B then find their union.
*July 2, 2012*

**Physics**

A Spanish galleon is about to be boarded by bloodthirsty pirates in the shallows of a Caribbean island. To save a box of treasure on board, the captain orders his crew to secretly toss the box overboard, planning to come back for it later. The rectangular box is waterproof and...
*June 29, 2012*

**geometry**

Determine the following AU(CUB)start by finding C and B then find CUB.
*June 29, 2012*

**geometry**

Given these sets a=(3,4,5,6,7) b=(6,7,8,9) c= (2,4,6,8) List the elements of this set CN (AUB)
*June 29, 2012*

**geometry**

start by finding C and B then find CUB
*June 27, 2012*

**geometry**

Determine the following AU(CUB)
*June 27, 2012*

**geometry**

THE FOLLOWING ANGLES ARE COMPLEMENTARY ANGLES. DETERMINE THE MEASURES OF ANGLE 1 AND ANGLE 2. X= ANGLE 1 3x+10= ANGLE 2
*June 27, 2012*

**geometry**

FIND THE PERIMETER AND AREA OF A RIGHT IF THE SHORTEST SIDE IS 20MM. AND THE LONGEST SIDE IS 52MM. INCLUDE CORRECT UNITS WITH EACH PART OF YOUR SOLUTION.
*June 27, 2012*

**geometry**

What is the exact area of a circle with a diameter of 25 inches?
*June 27, 2012*

**geometry**

DEF and ABC are complementary angles and ABC is nine times as large as DEF. Determine the measure of each angle.
*June 27, 2012*

**geometry**

The supplementary angles are supplementary angles. Determine the measures of angle 1 and angle 2. angle 2=x angle 1 = 5x+6 This is what i came up with. <1+<2=180 I subtracted 6 from both sides.Divided by 5 and i came up with 34.8 degrees. < 1 = 5x+6 5(34.8)+6 180 ...
*June 24, 2012*

**geometry**

Determine the volume of the figure. The base of the pyramid is the triangle and we don't know it's height I need to find it first. solve for h The numbers are 5ft and 7ft on top and 6ft and 5ft on bottom. I have no idea how to do this one can someone please help.
*June 24, 2012*

**geometry**

Given the graph below,create a grouped frequency distribution. Amount per adult movie ticket. Los Angeles 12, New Orleans 9, Atlanta 7and a half, New York 12, Tokyo 20, Paris 17, Munich 15. I don't know how to post the graph but these are the shaded areas.
*June 20, 2012*

**geometry**

Given the graph below,create a grouped frequency distribution. Amount per adult movie ticket. Los Angeles 12, New Orleans 9, Atlanta 7and a half, New York 12, Tokyo 20, Paris 17, Munich 15. I don't know how to post the graph but these are the shaded areas.
*June 20, 2012*

**geometry**

The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 12 hours periods. Below is the sample 71 86 63 46 70 63 49 63 81 71 63 59 45 63 70 64 Construct a stem and leaf plot of the data.
*June 19, 2012*

**geometry**

What is the exact circumference of a circle with a diameter of 15 inches.
*June 19, 2012*

**geometry**

write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p= The mouse is in the house q= The cat is hungry.
*June 17, 2012*

**geometry**

In how many different ways can the top eight new indie bands be ranked on a top eight list? The top hit song for each of the eight bands will compete to recieve monetary awards of $1000,$500,$250,and $100,respectively. In how many ways can the awards be given out.
*June 15, 2012*

**geometry**

A card is selected from a standard deck of 52 playing cards. A standard deck of cards has 12 face cards and four Aces (aces are not face cards find the probability of selecting. an eight given the card is not a face card. a club given the card is red. A king,given the card is ...
*June 15, 2012*

**AP Chemistry**

Thank you! This is one of the very introductory chapters. It teaches conversion rates and the difference between English, Metric, and SI Units, which is why there are English and Metric Units. The point is to convert the English units to Metric first.
*June 15, 2012*

**AP Chemistry**

What pressure is a person exerting on the floor if the person weighs 145 lbs and has shoes that contact the floor over a total area of 300. cm^2?
*June 15, 2012*

**chemistry**

What pressure is a person exerting on the floor if the person weighs 145 lbs and has shoes that contact the floor over a total area of 300. cm^2?
*June 13, 2012*

**geometry**

Show all work. Mary purchased a package of 15 different plants.but she only needed 10 plants for planting. In how many ways can she select the 10 plants from the package to be planted?
*June 12, 2012*

**geometry**

Each of the numbers 0 through 15 is written on a piece of paper and all of the pieces of paper are placed in a hat. One number is selected at random. determine the probability that the number selected is even. Note 0 is considered an even number.
*June 11, 2012*

**geometry**

In exercises 17-20, a single die is rolled one time. Determine the probability of rolling a number greater than 3 or less than 5.
*June 11, 2012*

**geometry**

A community 5K run will award $ 50 to the winner. 40 people enter the race,and they each pay an entry fee of $20. Assuming thay are all equally likely to win, what is a fair price for the competition? Round to the nearest cent.
*June 8, 2012*

**GEOMETRY**

Last fall, a gardener planted 56 iris bulbs. She found that only 49 of the bulbs bllomed in the spring. Find the empirical probability that an iris bulb of this type will bloom. give answer as a fraction in lowest terms. How many bulbs should she plant next fall if she would ...
*June 7, 2012*

**geometry**

One thousand raffle tickets are sold for $1.00 each. One grand prize of $200 and two consolation prizes of $50 each will be awarded. Jeremy purchases one ticket. Find his expected value. Show your work for full credit.
*June 6, 2012*

**geometry**

Expected value If on a $1 bet, Paul Goldstein's expected value is 0.30, what is Paul's expected value on a $5 bet. I got 1.50 but my teacher said it wasn't correct.
*June 5, 2012*

**geometry**

Expected value If on a $1 bet, Paul Goldstein's expected value is 0.30,what is Paul's expected value on a $5 bet?
*June 4, 2012*

**Reimbursement methodologies**

Yeah the answer is CMS-1500! Deals with outpatient claims only.
*June 4, 2012*

**geometry**

In exercises 31-34, a cooler at a picnic contains 100 cans of soda covered by ice. There are 30 cans of soda, 40 cans of orange soda, 10 cans of ginger ale,and 20 cans of root beer. The cans are all the same size and shape. If one can is selected at random from the cooler,...
*June 4, 2012*

**GEOMETRY**

DETERMINE WHICH IF ANY,OF THE THREE STATEMENTS ARE EQUIVALENT. GIVE A REASON FOR YOUR CONCLUSION.SHOW COMPLETE WORK. 1) iF THE DOG LICKS HER NOSE, THEN THE DOG IS NOT HAPPY. 2) IF THE DOG LICKS HER NOSE,THEN THE DOG IS HAPPY. 3) iF THE DOG IS NOT HAPPY,THEN THE DOG DOES NOT ...
*June 2, 2012*

**math**

30+ 23+27-17= 80-17= 63
*June 2, 2012*

**geometry**

write the argument below in symbols to determine whether it is valid or invalid. State you reason for your conclusion. Specify the p and q you used. Either the koi are swimming in the pond or the birds are chirping. The birds are not chirping. The koi are swimming in the pond.
*June 2, 2012*

**geometry**

construct a truth table for(p^~q)________> q .
*June 2, 2012*

**geometry**

Given p is false, q is true,and r is false, find the truth value of the statement. (~P <____> ~Q) ____> ~r Show step by step work.
*June 1, 2012*

**geometry**

Construct a truth table for (q^p)____> ~ p, Be sure to include all intermediate steps in your table.
*June 1, 2012*