Saturday

September 20, 2014

September 20, 2014

Total # Posts: 804

**Physics**

A glider of length 10.1 cm moves on an air track with constant acceleration. A time interval of 0.732 s elapses between the moment when its front end passes a fixed point circled A along the track and the moment when its back end passes this point. Next, a time interval of 1....
*September 16, 2014*

**Calculus-Math**

The ordering and transportation cost C for components used in a manufacturing process is approximated by the function below, where C is measured in thousands of dollars and x is the order size in hundreds. C(x) = 12((1/x)+((x)/(x+3))) (a) Verify that C(2) = C(15). C(2) = 54/5 ...
*September 15, 2014*

**chemistry **

kilojoules released when 80.0g of steam condenses at 100 ∘C and to cool the liquid and freeze it at 0 ∘C I used the formula for condensation/ evaporation( 80.0g(2260)1kJ/1000J=632.8) and then i used the formula for heat of fusion(80.0g(334/1)1kJ/1000J=26.72) then ...
*September 15, 2014*

**physics**

A speedy tortoise can run at 0.12 m/s, and a hare can run 18 times as fast. In a race, they start at the same time, but the hare stops to rest for 1.5 min, so the tortoise wins by a shell (20 cm). How long does the race take? Answer in units of s
*September 11, 2014*

**finance**

I'm in great need of help with a finance problem. You are a small business owner and you have the opportunity to expand your facility, which will increase your production capacity over the next 5 years. The expansion will cost $60,000 and additional equipment will cost ...
*September 9, 2014*

**Precalculus**

The angle of depression From the top of a 75-foot lighthouse to a ship out in the ocean is 40'. How far is the ship From the lighthous?
*September 8, 2014*

**language**

Finding the subject and predicate in The production of clean timber takes several years.
*September 3, 2014*

**finance**

I need help bad. You have been running your small business, Craft’s Boat Shop, for several years now and have been very successful. You have come to the point where you expect sales to increase next year and want to be sure that you have enough assets available to ...
*September 2, 2014*

**P.E**

You are correct, it is false
*September 2, 2014*

**chemistry**

the density of alcohol is 0.79g/ml. find the mass of 15.5ml of alcohol? 15.5ml x 0.79g/ml = mass 12.245g
*August 26, 2014*

**trigonometry**

to unload hollow blocks from the cargo truck a wooden plank whose end rests against the truck's platform 1.5 meters above the ground is used. if it is inclined 37%49 with the ground, how long is the wooden plank?
*August 14, 2014*

**Calculus**

Find an equation of the tangent line to the graph of the function f through the point (x0, y0) not on the graph. To find the point of tangency (x, y) on the graph of f, solve the following equation of f '(x). f '(x) = y0 − y/x0 − x f(x) = √x (x0, y0...
*August 4, 2014*

**math(precalculus)**

Write the equation of a Rational Function satisfying given conditions. Has vertical asymptotes located at x-2 and x=-1 Has a horizontal asymptote located at y=0(x-axis) y-intercept:(0,2) x-intercept (4,0) R(x)= ??? what I did is, R(x)= ax+b/c(x-2)(x+1) then plug in (0,2), b=-...
*July 31, 2014*

**Math 221**

How can I explain how I got the answer. I received the help, but no explanation to how the answer was simplified. 1=1(-7) +b b = 8 In other words, you need to explain what you did to simplify 1=1(-7) + b. This is also true for the perpendicular equation process. 2=2(4) +b ...
*July 26, 2014*

**Math 221**

Thank you so much! Algebra is bit confusing for me
*July 25, 2014*

**Math 221**

Also what is the x and y intercept for this equation and origin? 2). My second equation that I am using is: y=-1/2x+1, and the perpendicular must pass through this given point (4, 2). y=1/2+1 equation and (4, 2) is the ordered pair Slope m=-1/2 So the slope of perpendicular =-...
*July 25, 2014*

**Math 221**

where is the origin located in this equation? 1). The first equation that I am using for my discussion is: y=x+4 and the parallel must past through this given point (-7, 1) y=x=-4 is the equation and (-7, 1) is the ordered pair y=x+4 Since I want the new line parallel, I need ...
*July 25, 2014*

**Math 221**

How about this equation, does it have an origin and what is an x and y intercept? 2). My second equation that I am using is: y=-1/2x+1, and the perpendicular must pass through this given point (4, 2). y=1/2+1 equation and (4, 2) is the ordered pair Slope m=-1/2 So the slope of...
*July 25, 2014*

**Math 221**

where is the origin located in this equation?
*July 25, 2014*

**Math 221**

I need to check and see if this is correct? 1). The first equation that I am using for my discussion is: y=x+4 and the parallel must past through this given point (-7, 1) y=x=-4 is the equation and (-7, 1) is the ordered pair y=x+4 Since I want the new line parallel, I need to...
*July 25, 2014*

**Math 221**

I am trying to figure out if this equation is correct? My second equation that I am using is: y=-1/2x+1, and the perpendicular must pass through this given point (4, 2). y-y=m(x-y) y-2=2(x-4) perpendicular lines have to have slopes, so y-2=2x-8 y-2+2=2x-8+2 reciprocal y=2x-6 ...
*July 25, 2014*

**Math 221**

These are the questions that's used for my classwork and I need help with it. There is no typo. y=x+4 and the parallel must past through this given point (-7, 1) y=-1/2x+1, and the perpendicular must pass through this given point (4, 2)
*July 25, 2014*

**Math 221*revised***

Please help me figure these problems out y=x+4 and the parallel must past through this given point (-7, 1) y=-1/2x+1, and the perpendicular must pass through this given point (4, 2)
*July 24, 2014*

**Math 221**

I need help trying to figure this out: y+x+4 and the parallel must past through this given point (-7, 1)
*July 24, 2014*

**Math 221*revised***

17 < BMI <= 22 might have a longer life span than average 23 < BMI <= 25 probably not overweight 25 < BMI <= 30 probably overweight BMI > 30 obese **Have to use height of 62 inches and 150 pounds**
*July 22, 2014*

**Math 221**

Formula 17 < BMI <= 22 might have a longer life span than average 23 < BMI <= 25 probably not overweight 25 < BMI <= 30 probably overweight BMI > 30 obese **Have to use height of 5'2 and 150 pounds**
*July 21, 2014*

**Math 221**

What is the difference between a conditional and literal equation?
*July 21, 2014*

**Math 221**

What is the difference between a conditional and literal equation?
*July 21, 2014*

**Math 221**

What is the equation for W? P=2L+2W
*July 21, 2014*

**Math 221**

P=2L+2W
*July 21, 2014*

**Math 221**

Solve the inequality for v. 6v+6 > -30 - >Greater than or less than symbol -
*July 20, 2014*

**Math 221**

Write the following as an inequality. 9 is greater than y , and is less than or equal to y
*July 20, 2014*

**Math 221**

Solve the inequality for v. 6v+6 > -30 -
*July 20, 2014*

**Math 221**

2 is less than y , and 7 is greater than y or equal to Use only once in your inequality.
*July 20, 2014*

**Math**

A garden table and a bench cost $786 combined. The garden table costs $36 more than the bench. What is the cost of the bench?
*July 20, 2014*

**Math**

Solve the inequality for x. 29> 5+4x -
*July 20, 2014*

**math**

first find bx by substituting in 10 for x in the equation for the number of dogs. so... bx=2(10) - 5 = 15. we need 15 bags of dog food. now substitute in 15 for x in the m(x) equation 3(15)+1= 46. $46 to purchase 15 bags of dog food for 10 dogs. hope this helps.
*June 6, 2014*

**MULTIPLY. WRITE EACH PRODUCT IN SCIENTIFIC NOTATIO**

multiply the constants together (3x2) to get 6 and then since you are multiplying and the bases are the same (the 10's) you can just add their exponents to make 10^18. so you now have 6 * 10^18. done. Same thing for the next one.
*June 6, 2014*

**algebra**

use the distributive property.... multiply the -x by 6x and get -6x^2 minus the -x times the 7 to get -7x. then multiply everything by a -1 to get rid of the negative signs.
*June 6, 2014*

**probability**

got it thank you very much
*June 6, 2014*

**probability**

Two questions: 1. Assume a building has two independent security alarm systems. The first system works for 80% of the time and the second works 70% of the time. What percentage of time is the building protected by at least one security alarm system? Please explain. 2. There ...
*June 6, 2014*

**Math**

no problem! hope this helps for a better understanding
*June 6, 2014*

**Math**

when you are multiplying, and the bases (the 8 and 2.6) are the same, you can just add the exponents. so...8^19 and 2.6^24
*June 6, 2014*

**Math**

red=20/50 or .4 blue=10/50 or .2 green= 9/50 or .18 yellow=11/50.22 the results for each color over the total number of spins is the probability. to change it to a decimal divide the top number by the bottom number ex: 20 divided by 50.
*June 6, 2014*

**algebra**

You are using the distributive property here. the -3m is being multiplied by the m and then multiplied by the 8.
*June 6, 2014*

**math question**

the probability of selecting a yellow is 4/20 because there were four yellow out of 20 draws. However, to get the probability of NOT selecting a yellow, it is all the other draws that total 16 out of 20. so 16/20 which reduces to 4/5 which is .8 probability of selecting a ...
*June 6, 2014*

**Math**

all the terms that are x^2 need to be added together "combined". all the x's need to be combined and all the constants (just the number by itself) need to be added. This is called combining like terms. x^2 can only be added to other x^2. and x's can only be ...
*June 6, 2014*

**maths**

I wouldn't include 0 because you said from 1-100 not 0-100.
*June 6, 2014*

**algebra**

multiply only the numbers together and then having two x's is represented as x^2.
*June 6, 2014*

**math**

factorize :x2-2X+xy-2y
*May 27, 2014*

**ACCOUNTING HELP**

At the end of the current year, $19,900 of fees have been earned but not billed to clients. a. What is the adjustment to record the accrued fees? Indicate each account affected, whether the account is increased or decreased, and the amount of the increase or decrease. b. If ...
*May 25, 2014*

**English 4 **

1. Which of the following displays a correct use of pronouns? A. Soung spent more money than me B. Jamal was as interested as her C. Claudia has always been better at math than I. 2. Read the following sentence and determine which sentence in each set of three is punctuated ...
*May 23, 2014*

**English 4 help **

1. Which of the following statements is the best example of a limited subject for a research project? A. animal behavior B. animal welfare C. how to improve animal welfare D. improving welfare of farm animals 2. When evaluating the credibility of a source it is most important ...
*May 23, 2014*

**English 4 help **

1. both George Orwell and Stevie Smith employed irony in their writing. True or False 2. Alfred, Lord Tennyson's poem "Crossing the Bar" and Dylan Thomas's poem "Do Not Go Gently into That Good Night" convey a similar view point about death. True or...
*May 23, 2014*

**Economics**

People are more likely to clean up waste in their homes than at a community park because.. A. people expect the community park to be dirty. B. hiring a person to clean the home is expensive. C. they own and therefore feel responsible for their home. D. there is no penalty for ...
*May 21, 2014*

**Chemistry**

What are the three essential parts to make a battery? Cell reducing agent acid fuse porous barrier or salt bridge voltage regulator oxidizing agent
*May 14, 2014*

**chemistry**

Write the balanced equation for the neutralization reaction between H3PO4 and NaOH in aqueous solution. Phases are optional.
*May 14, 2014*

**Chemistry**

How many milliliters of 4.25 M H2SO4(aq) are needed to react completely with 45.9 g of BaO2(s)?
*May 14, 2014*

**CHEM 101**

Draw a reaction profile for reaction 2N2+O2+heat→2N2O, must include proper labels for each axis, reactants, products, indication for activation Energy and transition state
*May 2, 2014*

**Chemistry**

To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 10.9 g, and its initial temperature is -12.0 °C. The water resulting from the melted ice reaches the temperature of your skin, 29.6 °C. How much heat is ...
*April 12, 2014*

**math**

IF I RAN 3/8 OF A MILE HOW MUCH FURTHER WOULD I HAVE TO RUN TO MAKE A MILE
*April 11, 2014*

**accounting**

At the end of the current year, $19,900 of fees have been earned but not billed to clients. a. What is the adjustment to record the accrued fees? Indicate each account affected, whether the account is increased or decreased, and the amount of the increase or decrease. b. If ...
*April 7, 2014*

**math**

Kathy scored 9 points. that was 18% of her teams score. How many points did the team score?
*February 25, 2014*

**physics**

a 2250 kg car is traveling at 20 m/s to the west. the force required to stop the car at 7890 N to the east. How long will it take the car to stop? How far would the car move before stopping?
*February 25, 2014*

**Physics**

A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Ini- tially a car is 29 m behind the train, traveling in the same direction as the train at 38 m/s and accelerating at 2 m/s2. What is the speed of the car just as it passes the train? Answer...
*February 20, 2014*

**Physics**

A student performs a ballistic pendulum experiment using an apparatus similar to that shown in the figure. Initially the bullet is fired at the block while the block is at rest (at its lowest swing point). After the bullet hits the block, the block rises to its highest ...
*February 20, 2014*

**Statistics**

There are 100 questions from a SAT test, and they are all multiple choice with possible answers of a,b,c,d,e for each question only one answer is correct. Find the mean number of correct answers for those who make random guesses for all 100 questions?
*February 13, 2014*

**math**

A.5/6 B.5/8 C.?
*February 6, 2014*

**Emmert**

An astronaut mass has a mass of 100kg She recedes from her spacecraft using spurts of gas from a small unit on her back. If the force generated by the gas spurt is 50N calculate her acceleration
*February 6, 2014*

**accounting**

At the end of the current year, $19,900 of fees have been earned but not billed to clients. a. What is the adjustment to record the accrued fees? Indicate each account affected, whether the account is increased or decreased, and the amount of the increase or decrease. b. If ...
*February 4, 2014*

**physics**

3. A man leaves his home by car and travels 5 km on a road running due East. The driver then turns left and travels 2 km due north to a junction where he joins a road that goes North West and drives a further 2 km. Find his displacement from home by then.
*February 2, 2014*

**physics**

A 0.5 kg soccer ball is kicked with a force of 50 Newtons for 0.2 sec. The ball was at rest before the kick. What is the speed of the soccer ball after the kick?
*January 23, 2014*

**physics**

A 3kg ball is accelerated from rest to a speed of 10 m/s. What is the ball's change in momentum?
*January 23, 2014*

**physics**

A net force of 100 newtons is applied to a 20 kg cart that is already moving at 3 meters per second. The final speed of the cart was 8 m/s. For how long was the force applied?
*January 23, 2014*

**science... PLEASE HELP!**

Solids have a fixed shape and volume. Their molecules are locked in place. The molecules constantly vibrate, but they cannot move or switch places with other molecules. As a result, a solid retains its shape and size.
*January 23, 2014*

**physics**

A 1,400kg car is traveling in a straight line. Its momentum is equal to 2,000 kg. What is the velocity of the car?
*January 23, 2014*

**physics**

A beach ball rolling in a straight line toward you at a speed of 0.5 m/sec. Its momentum is 0.25kg m/sec. What is the mass of the beach ball?
*January 23, 2014*

**science**

An 8kg bowling ball is rolling in a straight line toward you. If its momentum is 16kg m/sec, how fast is it traveling?
*January 23, 2014*

**Geometry**

Stephanie casts a shadow of 1.2m and she is 1.8m tall. A wind turbine casts a shadow of 10m at the same time that Stephanie measured her shadow. Draw a diagram of this situation and then calculate how tall the wind turbine is.
*January 11, 2014*

** world geography **

In Iceland and the British Isles, the ocean creates a __________________ . a. mild temperatures c. hot and humid temperatures b. cold and wet temperatures d. hot and dry temperatures
*December 13, 2013*

**Algebra 1**

Thanks
*December 5, 2013*

**Algebra 1**

6y^-3 Can you show steps on how to do this
*December 5, 2013*

**Algebra 1 HELP**

I am not sure how to do these 2 problems can someone show me. Simplify the expression Write answers using exponents. 8^6/8^4*8^2 4^5*1/4^2 <---is by the 4 only
*December 5, 2013*

**Statistics**

$145 million for FY04 and $ 0 million for FY05
*December 3, 2013*

**QNT/351**

Describe a business situation, other than what has already been selected by fellow students or selected from the team assignment, where mean and standard deviation can be used in decision making. Describe how calculation of mean and standard deviation can help in making a ...
*November 26, 2013*

**Physics **

A 5 kg block is hanging from the top of an elevator if the elevator is accelerating upward at a rate of 3m/s/s, what is the tension in the rope that the block is hanging from?
*November 24, 2013*

**math**

How do you get 105?
*October 9, 2013*

**math**

At the ruins of Caesarea, archaeologists discovered a huge hydraulic concrete block with a volume of 945 cubic meters. The block's dimensions are x meters high by 12x - 15 meters long by 12x - 21 meters wide. What is the height of the block? I have no idea how to do this. ...
*October 9, 2013*

**chemistry**

Im stuck on these few questions that seems to be getting me no where : -Determine the number of mmoles of HCl that did not react with the anatacid. c HCl = 0.1812 c NaOH = 0.1511 volume of HCl added : 75 volume of NaOH added: 29.23,19.58,33.3 - mmoles of HCl neutralized by the...
*October 8, 2013*

**algebra 2**

What is the absolute value if 10-7i?
*September 17, 2013*

**PSY202**

in order ti increase self-esteem, experts say you should a:praise any behavior without reservation b:acknowledge completed tasks, especially those that are difficult c:avoid tasks that are easily completed d:set high standards, especially in areas that are not relevant to your...
*September 17, 2013*

**physics**

A Boeing 787 is initially moving down the runway at 3.0 m/s preparing for takeoff. The pilot pulls on the throttle so that the engines give the plane a constant acceleration of 1.7 m/s2. The plane then travels a distance of 1900 m down the runway before lifting off. How long ...
*September 8, 2013*

**physics**

The Graph above shows the speed of a car traveling in a straight line as a function of time. The car accelerates uniformly and reaches a speed Vb of 4.00 m/s in 8.00 seconds. Calculate the distance traveled by the car from a time of 1.20 to 4.40 seconds.
*September 8, 2013*

**Early childhood**

I need to see an written example of a summary report on a child for preschool that covers the seven domain. 1.Personal and social development 2. Language and Literacy 3. Mathematical Thinking. 4. Scientific Thinking. 5. Social Studies. 6. the Arts. 7.Physical development, ...
*August 24, 2013*

**Math**

If Ginny took out a loan for 21,000 in 8/2011 at 6.5% and wants to pay off in 9/2013, and has been making monthly payments of $239.00 how much will she be charged to pay it all? Please help. Thanks
*August 22, 2013*

**English**

how can i rephrase this so that both parts are parallel Lots of my friends think that Prince's music is old, but I think it's not only excellent but also an innovation.
*August 17, 2013*

**Business and Finance**

Jeff Jones earns $1,200 per week. He is married and claims four withholding allowances. The FICA rate is as follows: Social Security rate is 6.2% on $97,500; Medicare rate is 1.45%. To date his cumulative wages are $6,000. Each paycheck, his employer also deducts $42.50 for ...
*August 13, 2013*

**Math**

When a not-for-profit facility receives a contribution from a member of the community, the cost of the capital is inconsequential when deciding how to use the contribution, because it is, in effect, free money.”
*August 6, 2013*

**Psychology**

Nelda is fearful of public places and has managed to stay "at home" for the last three years. She and her therapist have developed a strategy. During the first week, she will go to the front door and open it and look outside. If she can remain calm, the goal for the ...
*July 26, 2013*

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