Sunday

August 2, 2015

August 2, 2015

Total # Posts: 888

**Probability**

wow.wel cases like these we are going to use a permutation formula which is:nPr=n!/(n-r)! nw 26P5=26/(26-5)! were n=26 and r=5 xo nw we ave 26P5=26!/21! 26*25*24*23*22*21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1/21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1=...
*July 30, 2015*

**maths**

A hallow sphere has a volume of xcm^3 and a surface area of ycm^2 if the value of the diameter of the sphere is the radius of the area of a semicircle.what is the radius of a cylinder(P) if the area of the circle is equal to the area of the cylinder when the hight of the ...
*July 30, 2015*

**maths**

A hallow sphere has a volume of kcm^3 and a surface area of kcm^2.what is the value of the diameter of the sphere if it is tripled
*July 30, 2015*

**maths**

(1)differentiates,x^x^10 Question(2),compute each of the following double integral over the rectangles where R=(-2,-1)*(0,1),§x^2y^2+cos(paix)+sin(paiy)dA qustion3:investigate the stationary point of f(x) if y=3x^2+y^3-3x^2-3y^2-2
*July 30, 2015*

**maths**

plz i cerious need help i posted dis qustion bt due 2 my wrong typing it was nt anser plz here it is:x^4+3x-2/(x^2+1)=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+(Hx+1)/(x-4)^2.find ABCDEFGH? plz it a partial fraction thank yo u and Godbless u
*July 29, 2015*

**maths**

npr=3024 find r (2)dy/dx=secx-tanx/secx+tanx. plz help
*July 28, 2015*

**physics**

A particles of mass 10-2kg is fixed at the tip of a fan blade which rotates at an angular velocity of 100rad-1.if the radius of the blade is 0.2m,then what is the centripetal force?
*July 28, 2015*

**physics**

A stone is thrown horizontally outward from the top of a bridge, the stone is released 19.6meter above the street below.the initial velocity of the stone is 5.0m/s.determine the (a)total time that the stone is in the air (b)magnitude and direction of the velocity"...
*July 28, 2015*

**Maths**

x^4+3x-2/(x^2+1)^3(x-4)=Ax+B/(x^2+1)+Cx+D/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+(Hx+1)/(x-4)^2.find ABCDEFGH?xo sori 4 al my numerous erros am jus despirate thankyou Godbless you
*July 28, 2015*

**maths**

A spherical tank of diameter 3m is filled with water from a pipe of radius 30cm at 0.2m/s.calculate an corect to 3s.f the time in minute it take to fill the tank.thankyou godbless
*July 28, 2015*

**maths**

here is another.A spherical tank of diameter 3m is filled wit water from a pipe of radius 30cm to 0.2m/s.calculate an corcet to 3s.f the time in minute it wil take to feel the tank take to be TT=22/7 thankyou
*July 28, 2015*

**maths**

x^4+3x-2/(x^2+1)^3(x-4)=(Ax+B)/(x^2+1)+(Cx+D)/(x^2+1)^2+(Ex+F)/(x^2+1)^3+H/(x-4)+G/(x-4)^2.find ABCDEFGH?plz solve it a partial fraction i serious need the solution urgently
*July 28, 2015*

**mathematics**

x^4+3x-4/(x^2+1)^3(x-4)=Ax+B/(x^2+1)+(Cx+D)/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+H/(x-4)^2.? find ABCDEFGH plz it a partial fraction i need the solution urgently
*July 28, 2015*

**government secondary school abuja**

solve the partial fraction.x^4+3x-2/(x^2+1)^3(x-4)=(Ax+B)/(x^2+1)+(Cx+D)/(x^2+1)^2+(Ex+F)/(x^2+1)^3+G/(x-4)+H/(x-4)^2.Find the value of ABCDEFGH, plz help
*July 28, 2015*

**Math (PLEASE HELP!)**

1. The sum of the squares of two numbers is 74 and the difference of their squares is 24. a) What system of equations models this situation? b) What are the two numbers? 2. For what value of b will the line y= -2x+b be tangent to the parabola y=3x^2+4x-1?
*June 18, 2015*

**Microeconomics**

Thanks
*May 27, 2015*

**Microeconomics **

Medical doctors earn higher incomes than people who have a Ph.D. in economics. This is partly because A. Medical doctors are more likely to face malpractice lawsuits. B. The costs of receiving necessary medical education are higher. C. A relatively small number of students are...
*May 27, 2015*

**Management**

just check for accuracy please? 3. Which one of the following situations is an example of overall cost leadership? A. A dress manufacturer wants to make its product unique in its category. B. A company that manufactures school desks is looking for ways to make its desks less ...
*May 23, 2015*

**Economics**

Suppose that Erin spends all of her income on two goods: pizza and fiction novels. If the price of pizza rises, then A. The current marginal utility per dollar spent on pizza will rise B. The current marginal utility per dollar spent on pizza will fall C. The current marginal ...
*May 16, 2015*

**Microeconomics**

If a competitive market operates perfectly, it relies on A. The number of people buying goods B. The laws of supply and demand C. How many products can be produced for sale d. how much people are willing to pay for the products. The answer is B?
*May 13, 2015*

**history **

Which of the following was the primary cause of the Balkans wars conducted during the Clinton administration I picked the break up of the former state of Yugoslavia
*May 13, 2015*

**Microeconomics **

If the price elasticity of demand is 2, this means that a _____________ increase in price causes a ____________ decrease in quantity demanded. A. 15%; 100% B. 15%; 10% C. 20%; 40% D. 30%; 20%
*May 8, 2015*

**LANUGAGE ARTS**

Yes Ms.Sue the poen is "President Lincolns Declaration of Emancipation, January 1, 1863
*March 6, 2015*

**Language arts**

Callie im sorry but that is wrong it is really B
*February 27, 2015*

**Math**

Ms.Li spent $840 on a vacation. She spent 2/3 of the amount on a train ticket and 1/2 of the remaining amount on food. how much did she spend on the ticket and food together?
*February 25, 2015*

**physics**

Shawn and his bike have a total mass of 57.1 kg. Shawn rides his bike 1.3 km in 14 min at a constant velocity. The acceleration of gravity is 9.8 m/s 2 . What is Shawn’s kinetic energy?
*January 19, 2015*

**algebra**

Carla and robena sell game tickets. they have already sold 95 student tickets. Carla says that they need to sell 252 adult tickets to reach the goal of $3000. robena says that they need to sell 253 adult tickets to reach the goal. who is correct? explain your reasoning
*December 24, 2014*

**math**

How does the fact 36÷6=6 help you estimate the quotient of 364,573÷64?
*December 17, 2014*

**Chemistry**

25.0 ml of 0.235 M NiCl2 are combined with 30.0 ml of 2.260 M KOH. How many grams of nickel hydroxide will precipitate?
*December 14, 2014*

**Introductory to Physical Science**

A student drops a stopper into 50.0mL of water and the level rises to to 56.1mL. If she submerges the same stopper into a cylinder of thick syrup, what will happen to the syrup? a.) it will rise 6.1mL b.) it will rise less than 6.1mL c.) it will rise greater than 6.1mL d.) it...
*December 9, 2014*

**Chemistry**

A reaction requires 0.5 g of pure methyl oleate (density = 0.87g/mL) (MW = 310g/mol). How many mL of 70% pure methyl oleate are needed for the reaction. I don't exactly know how to start this off. I think what I'm supposed to do is multiply the 70% by the molecular ...
*December 2, 2014*

**chemistry**

Calculate the pressure exerted by 1.2 mol\rm mol of gas in a volume of 28.2 L\rm L and at a temperature of 334 K\rm K.
*November 25, 2014*

**Algebra**

If $31,500 is invested at 6.8% for 30 years, find the future value if the interest is compounded daily
*November 20, 2014*

**Art History**

Yay, thanks!
*November 15, 2014*

**Art History**

So its D?
*November 15, 2014*

**Art History **

Islamic architects commonly use which of the following elements in mosques? frescoes that depict humankind's relationship to Allah pyramidal bases that raise the mosque above other buildings crenellated towers that protect the mosque against attack minarets where criers ...
*November 15, 2014*

**History**

This amendment protects you from being over harged/prevents an unreasonably amount of money charged to bail. And for the cruel and unusual punishment protect you from unreasonable punishments like
*November 13, 2014*

**geography**

what are 3 examples that make scientists believe that the continents once fit together?
*November 12, 2014*

**Math**

I think the question was misprinted. I just can't figure out how to write an equation for it. Thanks
*October 27, 2014*

**Math**

There are 18 fewer bus riders than walkers. There are 6 walkers. How many students ride the bus?
*October 27, 2014*

**physics**

Let's say you measure an average acceleration to be 0.44 ms-2. What is the height (in centimeters) of the riser block? Assume the legs of the track span 1.0000 m and that there is neither friction nor drag. Also assume the block is under one of the legs.
*October 27, 2014*

**physics**

A ball is projected upward at time t = 0.0 s, from a point on a roof 10 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is Consider all quantities as positive in the upward direction. At time the velocity of the ball is ...
*October 23, 2014*

**physics please help**

A marathon is and long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of 3.1 ft/stride.
*October 23, 2014*

**Accounting**

Journal Entries Under the Perpetual Inventory System Bhushan Building Supplies entered into the following transactions.
*October 21, 2014*

**chemistry**

How many aluminum atoms are in 3.78 g\rm g of aluminum?
*October 20, 2014*

**physics**

A child does 350 J of work while pulling a box from the ground up to his tree house with a rope. The tree house is above the ground. What is the mass of the box?
*October 18, 2014*

**physics please help**

A drum (see Figure 10.2) has a radius of 0.40 m and a moment of inertia of 2.3 kg ∙ m2. The frictional torque of the drum axle is A 14 m length of rope is wound around the rim. The drum is initially at rest. A constant force is applied to the free end of the rope until ...
*October 18, 2014*

**physics please help**

Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?
*October 13, 2014*

**physics**

Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?
*October 9, 2014*

**physics**

Calculate the distance Michael will travel if he maintain an average speed of 9.4 m/s for 2.2 seconds
*October 9, 2014*

**physics**

Calculate the distance Michael will travel if he maintain an average speed of 9.4 m/s for 2.2 seconds.
*October 8, 2014*

**physics**

Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?
*October 8, 2014*

**social studies**

one reason why nigerians remain poor,despite their countrys large oil deposits
*September 29, 2014*

**Physics**

A proton with a kinetic energy of 4.7×10−16J moves perpendicular to a magnetic field of 0.25T .
*September 24, 2014*

**math**

How much ribbon is needed to wrap the package shown if 15 inches of ribbon are needed to make the bow? length is 16 width is 9 height is 4
*September 23, 2014*

**Algebra**

In the equation x^2 + mx + n = 0, m and n are integers. The only possible value for x is -3. What is the value of m? If I substitute -3 and solve for m, I can get many values for m based on what I pick for n. How can the answer only be 6?
*August 31, 2014*

**Algebra**

There are 25 trays on a table in the cafeteria. Each tray contains a cup only, a plate only, or both a cup and a plate. If 15 of the trays contain cups and 21 of the trays contain plates, how many contain both a cup and a plate? I assume Venn diagrams/methods are used, but I&#...
*August 24, 2014*

**Math - Old SAT exam**

If j, k, and n are consecutive integers such that 0<j<k<n and the units (ones) digit of the product is 9, what is the units digit of k? I thought of setting the product of x and x+2 to something but didn't know what.. I thought of pairs that get to a unit digit of...
*August 24, 2014*

**math**

The density of a solid or liquid material divided by the density of water is called the _______ of the material?
*August 21, 2014*

**Eng **

In his essay "revolution of time" Dunn would agree with all of the following statements except
*August 18, 2014*

**eng 130**

Which statement is most likely to be supported by objective data? A. In infancy the color blue iz associated with boy and pink is associated with girls. B. When in doubt, punt; when certain go for the goal on the fourth down. C. In my view the author's assumption are ...
*August 18, 2014*

**Math**

Suppose a child is sitting 5 feet from the fulcrum. Where does a 175 pound adult need to sit for the seesaw to be balance?
*August 7, 2014*

**health**

Researchers found that a ________ is more important and is the key to losing weight rather than a popular one.
*July 9, 2014*

**programming**

1. Assume there are n-tyres that could be used by car, tricycle and bicycle. Write an algorithm to accept n-tyres and generate all the combinations of cars, tricycle and bicycle that would exhaust the n-tyres. 2. Assume S is a string of lower case charcaters, write an ...
*June 9, 2014*

**Physics**

At 10:00 .hrs a 1.5- m-long vertical stick in air casts a shadow 1.4 m long. If the same stick is placed at 10:00 hrs in air in a flat bottomed pool of salt water half the height of the stick, how long is the shadow on the floor of the pool? (For this pool, n = ...
*May 22, 2014*

**Math**

The Book Nook makes four times as much revenue on paperback books as on hardcover books. If last month's sales totaled $124,300, how much was sold of each type book?
*May 4, 2014*

**personal finances**

nevermind the answer is b thanks for the answer NOT
*April 17, 2014*

**personal finances**

umm can someone help me please
*April 17, 2014*

**personal finances**

A family with $45,000 in assets and $22,000 of liabilities would have a net worth of: A. $45,000. B. $23,000. C. $22,000. D. $67,000. im thinking d
*April 17, 2014*

**Math**

The mad river flows at a rate of 2 KM/H. In order for a boat to travel 79.2 KM of River and then return in a total of eight hours how fast must about travel in Still water?
*April 15, 2014*

**health**

c is correct I just took my exam on ashworth and it said c is the answer
*April 11, 2014*

**health**

the answer is c
*April 11, 2014*

**health**

A person should not drink at all if he or she is: A. 21 and over B. Jobless C. Breastfeeding D. None of the above I got D
*April 11, 2014*

**health**

I think its c
*April 11, 2014*

**health**

Signs of a sleep disorder include? A. Trouble staying awake during the day B. Pauses in breathing during sleep C. Both A and B D. Coughing and sneezing
*April 11, 2014*

**health**

What is the Affordable Care Act? A. A program that allows people who are at higher risk for chronic diseases to gain free memberships to gyms and fitness facilities. B. A program that allows people who are at lower risk for chronic diseases to gain free memberships to gyms and...
*April 11, 2014*

**percentages/word problem**

Carousel Toys has Romper Buckaroos, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before they were marked down?
*April 3, 2014*

**percentages/word problem**

A refrigerator costs a company $1,600 to manufacture. If it sells for $3,456, what is the percent markup based on cost? (Round to the nearest whole percent.)
*April 3, 2014*

**percentages/word problem**

A wholesaler buys plastic lamps for $18 each and sells them for $30.60. What is the percent markup based on cost?
*April 3, 2014*

**percentages/word problem**

The Quick Plumbing Supply sells a set of faucets for $79.75. If a 45% markup based on cost was used, what was the cost of the faucets to Quick Plumbing? (Round to the nearest cent.)
*April 3, 2014*

**percentages/word problem**

The Soft Step Floor Company purchases carpeting for $5.12 per square yard and marks it up 55% based on the selling price. What is the selling price per square yard? (Round to the nearest cent.)
*April 3, 2014*

**percentages/word problem**

Beacon Electronics advertised a portable TV set on sale for $272.49 after a 35% markdown from the original price. What was the original price of the TV set? (Round to the nearest cent.
*April 3, 2014*

**percentages/word problem**

The Sweet Candy Shop buys 600 pounds of chocolate covered strawberries at $5.59 per pound. If a 10% spoilage rate is anticipated, at what price per pound should the strawberries be sold in order to achieve a 60% markup based on cost?
*April 3, 2014*

**percentages/word problem**

18) In October, a hardware store purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December, the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up 15%. In March, the ...
*April 3, 2014*

**percentages**

18) In October, a hardware store purchased snow shovels for $8 each. The original markup was 50% based on the selling price. In December, the store had a sale and marked down the shovels by 20%. By January 1, the sale was over and the shovels were marked up 15%. In March, the ...
*April 3, 2014*

**Physics**

If you try to lift a 2 x 10 plank by applying 25 N force but plank does not move did you do any work?
*March 18, 2014*

**science(check answers)**

Thanks emily your the best
*March 12, 2014*

**Chemistry **

How many moles of sulfur are present in 2.6 moles of Al2(SO4)3?
*March 10, 2014*

**Math**

Melanie can paint a 100 square foot wall in 4 hours. James can paint the same area in 3 hours. If they both paint nonstop for 6 hours, about how many square feet can Melanie and James paint together?
*March 9, 2014*

**statistics**

On the average five customers visit a children department store each hour. Using Poisson distribution, calculate the probability of three customers shop at the store.
*March 3, 2014*

**Math**

Mr. Anderson has a whirling sprinkler for watering his lawn. The sprinkler waters a circle whose length from the sprinkler to the edge of what is 12 meters. Find the area of the lawn that he can sprinkle at one time. I know it says find the area but my teacher said something ...
*February 24, 2014*

**Calculus**

lim([-1/(x+2)]+1/2)/x as x->0
*February 20, 2014*

**Consumer Math**

A pyramid composed of four equilateral triangles, called a tetrahedron, has a one-side length of 5 meters. What is its surface area? Round the answer to the nearest tenth.
*February 11, 2014*

**Help!!!**

Jonathan number 6 and number 7 are wrong all the others are correct
*February 3, 2014*

**Finance**

Which of the following statements about the relationship between yield to maturity and bond prices is FALSE? A. When the yield to maturity and coupon rate are the same, the bond is called a par value bond. B. A bond selling at a premium means that the coupon rate is greater ...
*January 25, 2014*

**Finance**

Assume that you are 23 years old and that you place $3,000 year-end deposits each year into a stock index fund that earns an average of 9% per year for the next 17 years. 1. How much money will be in the account at the end of 17 years? 2. How much in account 15 years later at ...
*January 21, 2014*

**Finance**

Thanks
*January 21, 2014*

**Finance**

Your trust fund will pay you $100.000 in six years when you turn 25. A shady institute has encourage you to sign over in exchange of cash today. Would you prefer a 8% or 10% discount rate to determine value of lump sum payment ? A. Use 8% the lump sum is $62, 741 is greater ...
*January 21, 2014*

**Finance**

Which of the following actions wiling DECREASE the present value of an investment. A. Decrease the interest B. Decrease the future value C. Decrease the amount of time D. All of the above will increase the present value
*January 19, 2014*

**social studies help???**

He's right!
*January 18, 2014*