Monday

April 27, 2015

April 27, 2015

Total # Posts: 1,629

**statistics**

What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
*September 12, 2012*

**statistics**

What are the sample median and the mode for males? The sample mean mark of the 50 male students is 8.30. If the sample mean for the entire sample is 8.42, what is the sample mean for the 75 female students?
*September 12, 2012*

**chemistry ( chemistry lab)**

-'Gasoline engine' what are the waste products form this engine ? what element must gasoline be composed of ? -'fuel cell'what are the waste products from this cell ? what is the fuel used in the fuel cell? MY ANSWERs : - C02 , h20 and heat energy are waste ...
*September 10, 2012*

** chemistry ---chenistry --- **

If it is assumed that a candle reacts with O2 ,in the air and the only products are energy , CO2 ,H20 ,what 2 elements must be present int he composition of the candle wax???
*September 10, 2012*

**History**

Who were the first sea explorers? Why did they explore the oceans? What resulted from their exploration? What did their exploration teach us about the world? What were the result of columbian Exchange?
*September 10, 2012*

**History Christopher Columbus**

Thank you Can please answer my other history question!
*September 10, 2012*

**History Christopher Columbus **

How did people first come to the Americas?
*September 10, 2012*

**Math**

29 I think... based on the order of operations.
*September 10, 2012*

**physics**

A popular entertainment at some carnivals is the blanket toss. (a) If a person is thrown to a maximum height of 26.0 ft above the blanket, how long does she spend in the air? (b) Is the amount of time the person is below a height of 13.0 ft more than, less than, or equal to ...
*September 10, 2012*

**chemistry (lab)**

how or where does the hat energy produced by the candle come from ?? help me!
*September 10, 2012*

**History**

Ok, thank you for answering my other history question :)
*September 9, 2012*

**History **

What are the new understanding of the population of the Americas before Eropian contact?
*September 9, 2012*

**History**

Thank you Can you please answer my other history question Please.....!!!!!
*September 9, 2012*

**History**

What are three ways in which the Americas might have been populated?
*September 9, 2012*

**History**

Thank you so much
*September 9, 2012*

**History**

How did geography of North America help or hinder our nation's development?
*September 9, 2012*

**Algebra**

If m angle BGC =16x-4 and m angle CGD = 2x+13,Find the value of x so that angle BGD is a right angle.
*September 9, 2012*

**Algebra**

If m angle FGE =5x+10, Find the value of x so that line FC is perpendicular to Line AE. Line AE is a striaght line
*September 9, 2012*

**Geometry**

Line MN is perpendicular to line NP. Point R is in the interior of the angle MNP. If angle MNR = 5x+12 and angle PNR =6x+23. Find both angle measures
*September 9, 2012*

**Geometry**

An angle is 15 less than four times its supplement. Find both angle measures.
*September 9, 2012*

**Geometry**

Two angles are complementary. One angle is ten less than three times the other angle. Find the measure of both angles.
*September 8, 2012*

**Geometry**

The m angle A is 30 more than twice angle B. If angle A and angle B form a linear pair, find the measure of both angles.
*September 8, 2012*

**Geometry**

Line AB is perpendicular to line BC. Point E is in the interior of angle ABC. If angle ABE = 2x+3 and angle EBC = 4x-9, find x. Then find the measure of both angles.
*September 8, 2012*

**chemistry**

chemical formulae which ends with ite,ate and ide
*September 2, 2012*

**chemistry**

many formulae which ends with ite,ate ide
*September 2, 2012*

**math**

ann wrote a three digit number. the digit inthe hendreds place is 4 less than the digit in the ones place. the digit in the tens place is two more than the digit in the ones place.the sum of the three digits is 16. what is the three digit number?
*August 27, 2012*

**math**

Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $120 for 3 days and 300 miles, while Mary was charged $210 for 5 days and 600 miles. What does Best Rental charge per day and per mile?
*August 27, 2012*

**chemistry**

An electronic balance shows the number 2.705 grams ; which digits is/ are the uncertain digit and which are the significant digit?
*August 26, 2012*

**chemistry**

does the number 340 have the same meaning as the number 340.0??
*August 26, 2012*

**physics**

How far to the nearest meter can a sprinter running at 9 m/s, travel in the time it takes a rock to fall 65 meters?
*August 26, 2012*

**chemistry**

2180 nanometer =?meter
*August 24, 2012*

**chemistry**

description of the procedure , step by step ,that was used to find the densities.... help me ...!!!
*August 23, 2012*

**chemistry**

Using the idea of atoms write a desciption of the difference between an element with a low density and an element with a hight density ???
*August 23, 2012*

**math**

Each year a growing tree adds a new ring to its section some years the ring is thicker than others why do you suppose this happens? Suppose the average thickness of growth rings in the Flintstones national forest is 0.5cm about how old is old Fred a famous tree in the forest ...
*August 23, 2012*

**math**

What's the circumference of a bicycle wheel with a 27 inch diameter?
*August 23, 2012*

**Algebra**

B. y=-2x+3 because: 2x+4y+2=3y+5 2x+4y-3y+2=3y-3y +5 2x-2x+ y+2=-2x+5 y+2-2=-2x+5-2 y=-2x+3
*August 22, 2012*

**algebra 1**

-5x-10=2-(x+4)=>5x-10=2-1(x+4) -5x-10=2-x-4 -5x+x-10=2-x+x-4 -4x-10=2-4 -4x-10+10=2-4+10 -4x=8 =>x=?
*August 22, 2012*

**algebra**

(-x-1)(-4x^2-2x+2) = 4x^3+2x^2-2x+4x^2+2x-2 =4x^3+6x^2-2
*August 22, 2012*

**chemistry**

water has a density of 1g/cm3 ; if 2 different pieces of the wood are put into water which will float and which will sink ? Wood 'a' has a density of 1.19g cm3 Wood "b" has a density of .67 g/cm3 Explain your answer?
*August 19, 2012*

**social studies**

how long does it take from Taipei, Taiwan to Miami,FL?? This is not a homework! i just wanna know it by myself cus my friend is going to visit me dis summer. i can't get the info from google or yah
*August 17, 2012*

**business and finance**

Ray Long wants to retire in Arizona when he is 70 years of age. Ray is now 50. He believes he will need $130,000 to retire comfortably. To date, Ray has set aside no retirement money. Assume Ray gets 14% interest compounded semiannually. How much must Ray invest today to meet ...
*August 13, 2012*

**business and finance**

Mobilee Oil Company accepted a $10,000, 120-day note, dated March 3, at 8.5% to settle a past due accounts receivable. Mobilee Oil discounted the note to raise cash on May 10 at a discounted rate of 9%. What proceeds did Mobilee Oil receive?
*August 13, 2012*

**business and finance**

Mel’s Furniture received an invoice dated September 27 for five bedroom sets at $3,000 each. The invoice indicated a trade discount of 5/8/3. The seller of the furniture prepaid the freight of $200. Terms were 2/10 EOM. Assuming Mel pays on November 2, what amount would ...
*August 13, 2012*

**business and finance**

Peter Mabel sold a total of 400 Oatmeal ($1.50) and Wheat ($2) breads during the Labor Day weekend. How many of each did Pete sell if total sales were $700?
*August 13, 2012*

**business and finance**

Earl Miller plans to buy a boat for $19,500 with an interest charge of $2,500. Earl figures he can afford a monthly payment of $650. If Earl has to pay 36 equal monthly payments, by how much can he afford the boat per month?
*August 13, 2012*

**business and finance**

The property of Al’s garage is worth $300,000. Al has a fire insurance policy of $180,000 that contains an 80% coinsurance clause. What will the insurance company pay on a fire that causes $210,000 damage? If Al met the coinsurance requirement, how much would the ...
*August 13, 2012*

**business and finance**

Use this information to calculate the following: Sales returns $ 700 Rent expense 1,288 Sales discounts 950 Depreciation expense 600 Cost of merchandise sold 7,600 Gross sales 20,900 Advertising expense 1,650 Salary expense 2,900 Heat expense 900 A. Net sales B. Gross profit C...
*August 13, 2012*

**history**

Please help me with my essay titled energy crisis: then and today...thanks
*August 1, 2012*

**readings in world civilization**

Kindly please check my answers. Thanks 1. As expressed in your readings, which of these statements best expresses the crucial paradox of the twentieth century? A. Human life is disregarded as nations seek global security. B. War in the name of liberty leads to tyranny. C. ...
*July 26, 2012*

**SCIENCE**

DO YOU THINK ENOGH STEPS HAVE BEEN TAKEN TO REDUCE ERRORS IN MEDICAL ABBREVIATION USAGE?
*July 14, 2012*

**algebra**

write in algebraic expressions: a number x increased by three times y
*July 9, 2012*

**math**

If I bought a jacket for $280.00 and it was 70% off how much would the jacket be?
*July 6, 2012*

**statistics**

The authors state that the heights of women in North America are normally distibuted with a mean of 65.0 and a standard deviation of 3.5 inches. I am 64.5 inches. Using the parameters above, what percent of women in North America are shorter than I am?
*July 2, 2012*

**pre cal**

7tan^2(pheta)-2=3
*June 28, 2012*

**offices finances**

A. Incorrect because, why would you need an officer sign something they have no concern over. B. Incorrect because, why would you pay money for a lawyer to sign a document. Hint: Collection reminders should be typed as if individually composed for that client. They’re ...
*June 28, 2012*

**Science**

1. What are some of the evidence that led Wegener to propose his theory, why it met with hostility and why the theory was revived in the 1950’s?
*June 28, 2012*

**College Chemistry**

It worked! Thank you so much :)
*June 23, 2012*

**College Chemistry**

What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M, ...
*June 23, 2012*

**history of modern china**

was the expectation of chinese rulers during the taiping rebellion unrealistic?
*June 22, 2012*

**Science**

can anyone please give me an example of a numbered key (classification) for these organisms about their structural features? squirrel,turtle, emu, goldfish and mouse. i need to make three but i need one example... thank you
*June 21, 2012*

**Physics**

Never mind, I figured this out.
*June 19, 2012*

**Physics**

A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 3 m at an incline of 44°. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the ice cube at the bottom ...
*June 19, 2012*

**Physics**

Thank you!
*June 18, 2012*

**Physics**

A 23-kg boy stands 3 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 180 kg m2. The boy begins to run in a circular path with a speed of 0.6 m/s relative to the ground. (a) Calculate the angular velocity of the merry-go-round in ...
*June 18, 2012*

**Grammar**

Thank you PsyDAG!
*June 9, 2012*

**Grammar**

What is the prefix, root and suffix of the word "subscribe"? My Answer: prefix - sub root - scrib suffix - e Can the suffix be a single letter? What about the word "misused"? Please help!? Am I right?
*June 9, 2012*

**Please Answer: Geography**

Describe the geography of Southern South America and how this geography influences economic activity? My Answer: Southern South America consists of 3 nations, Paraguay, Uruguay and Argentina. The Rio de la Plata is great river system that consists of 4 rivers that are also the...
*June 5, 2012*

**geometry**

The vertices of pentagon LMPQR are at L(4, -2), M(5, -2), P(8, -5), Q(6, -7), R(2, -4). The coordinates of the pentagon after two translations are L'(-5, -1), M'(-4, -1), P'(-1, -4), Q'(-3, -6), R'(-7, -3). How was LMPQR translated to create L'M'P...
*June 4, 2012*

**geography**

Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop? My Answer: In my opinion, the most pressing problem would have to be the management of poverty. South America is a huge ...
*June 4, 2012*

**Geometry Math**

If point M is the center of a sphere with the coordinates (-1,3,2) and point T is a point on the surface of the sphere with the coordinates (0,5,1), what is the radius of the sphere?
*June 4, 2012*

**Geometry Math**

Lines y= 2x/3+3&y=5 cut the ring formed by circles (x-3)2+(y-5)2=64 and (x-3)2+(y-5)2=25 into four parts. Find the area of each of the four parts.
*June 4, 2012*

**Math**

Find both the circumference area of the circle whose equation is (x-2)2+(y-3)2=64.
*June 4, 2012*

**maths**

4 3 - =8 2
*May 31, 2012*

**maths**

sorry the question was, show clearly that, 4 3 -- =8 2
*May 31, 2012*

**maths**

show clearly that 4 3 ---=8 2 solve the equation 5x2+14x-24=0
*May 31, 2012*

**Math**

x + (x + 17) = 45
*May 31, 2012*

**math**

María plans to enclose a rectangular area of her yard using the 16-foot side of her storage shed as one side of the enclosure, as shown above. If she uses 64 feet of fencing to complete the enclosure, what will be the length, x, of the enclosure?
*May 28, 2012*

**I need correct answers for all please !**

sorry, I worked hard to get the answers, you need to know this stuff though, try to answer and I will correct it for u
*May 24, 2012*

**Alg 2`**

what is the most simplified version of this? (x^2/x^2+2x+1)/(3x/x^2-1)
*May 24, 2012*

**Geometry**

Find the arc length, of a 130 degree arc, in a circle with a diameter of 7.2 inches. Round your answer to the nearest thousandth
*May 20, 2012*

**Geometry**

A 60 degree arc, of circle A, has exactly the same lenght as a 45 degree arc, of circle B. Find the ratio of the radius of circle A to the radius of circle B
*May 20, 2012*

**Geometry**

A circle is divided into three unequal sectors. One of the sectors has (x+40) degrees, the second sector has (2x+60) degrees, while the third sector has (3x+20) degrees. What is the value for x?
*May 20, 2012*

**math**

A laser pulse takes 2.56 seconds to travel from Earth to the Moon and return. Use this to calculate how far away the Moon is.
*May 19, 2012*

**composition(paraphrase this paragraph)**

self-service procurement. self service business intelligence. self-service recovery. user provisioning in private clouds. it's a wondrous world for end users today as IT departments roll out tools that hand them the reins to the data and services they desire, whether it&#...
*May 11, 2012*

**English**

Idon't konw
*May 6, 2012*

**Algebra**

x^1/2 * y^1/6 *z^1/5. We are to use rational exponents to write an expression. The sqrt of x - the sqrt of y, over the sqrt of x + the sqrt of y. I need to simplify and use radicals as needed. I obviously do but what...?? Please assist. Thank you.
*May 4, 2012*

**chemistry**

If 10L of CO2 at STP and 50g sodium chloride react with excess ammonia and water, what is the limiting reactant and the mass of baking soda produced?
*May 2, 2012*

**math**

how do you find the area under a curve
*May 1, 2012*

**vance high school**

how i can used division of labor in a sentences?
*May 1, 2012*

**vance high school**

how i can used specialization in a sentences?
*May 1, 2012*

**Chemistry**

Determine the volume of nitrogen gas at a pressure of 3.00 atm if it had a volume of 400.0 mL at STP.
*April 30, 2012*

**Chemistry**

A gas is collected over water at 30.0 degrees celsius. It's pressure is 752.5 mm Hg. What is the pressure of the dry gas? Water vapor pressure at twenty degrees Celsius is 27.5 mm Hg.
*April 24, 2012*

**Chemistry**

A gas is collected over water at 30.0 degrees celsius. It's pressure is 752.5 mm Hg. What is the pressure of the dry gas? Water vapor pressure at twenty degrees Celsius is 27.5 mm Hg.
*April 24, 2012*

**math**

A pair of dice is rolled, and a number that appears uppermost on each die is observed, Refer to this experiment and find the probability of the given event. (Enter your answer as a fraction)The sume of the numbers ia an add number.
*April 21, 2012*

**Math**

2^x+1=1/16 find x
*April 17, 2012*

**chemistry**

what mass of ethanol(C2H5OH) will be required to prepare a 2.00m solution in 8.00kg of water?
*April 16, 2012*

**Mathematics**

thank you very much. in the 40 day.
*April 13, 2012*

**Mathematics**

Kate has a tennis lesson every 5 days. She has a basketball game every 8 days. If she has both a tennis lesson and a basketball game today, on what day will she have both again?
*April 13, 2012*

**Geometery**

A cylindrical water tank near Lisa's school is 18 meter high and has a circumference or 33 meter. The given formula can be used to determine the (v) of a cylinder?
*April 12, 2012*