Friday

December 19, 2014

December 19, 2014

Number of results: 102,153

**calculus**

Skeletal remains had lost 70% of the C-14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)
*March 2, 2014 by angie*

**Math**

Skeletal remains had lost 84% of the C-14 they originally contained. Determine the approximate age of the bones. (Assume the half life of carbon-14 is 5730 years. Round your answer to the nearest whole number.)
*April 5, 2014 by Vanessa*

**prealgebra**

can you please help me and help me solve this and show work: Identify the percent of change as an increase or a decrease. Then find the percent of change. #1.) Original:45 New:30 Please help i dont understand how to solve and show work
*February 27, 2012 by vick*

**algebra 1**

What is the speed, in miles per hour, of a toy car that runs 40 feet in 8 seconds? Round your answer to the nearest whole number. (1 hour = 3600; 1 mile = 5280 ft)
*April 5, 2013 by terri*

**Math**

How large a sample should be taken if the population mean is to be estimated with 95% confidence to within $75? The population has a standard deviation of $898. (Round you answer up to the nearest whole number.)
*June 20, 2013 by Sue 8*

**math**

How large a sample should be taken if the population mean is to be estimated with 95% confidence to within $75? The population has a standard deviation of $898. (Round you answer up to the nearest whole number
*June 22, 2013 by Tommy8*

**calculating statistical data**

what is the percent of variance for each item listed in the him department budget shown in the table below? round to two decimal points.
*July 23, 2014 by marcus*

**language arts**

1. The word centuries contains the Latin root cent-, meaning "hundred." Which of the following words contains the same root? center accent decent percent 2. The word mark is an Anglo-Saxon word meaning "boundary." Which of the following words does NOT contain this root? market...
*May 13, 2013 by Delilah*

**math**

the smallest number of people in a room where the probability of two of them having the same birthday is at least 50 percent. Answer is between 1 and 31. This is a classic problem given in probability classes. There are plenty of sites which will give and explain the answer, ...
*October 25, 2006 by christina*

**Math**

5).Hat size are determined by the measuring the circumference of the head in either inches or centimeters. Use ratio and proportion to complete the following table. Hat size Head circumference Head Circumference 7 ½ to nearest 1/5 inch to the nearest centimeter 7 3/8 23 3/5 60...
*May 28, 2010 by Mickey*

**Chemistry**

A(g) + B(g) <=> AB(g) At a given temperature 1.0 mole of A and 1.0 mole of B are placed in the 1.0 litre vessel and allowed to reach equilibrium. Analysis revealed that the equilibrium concenration of AB was 0.40 molar. What percent of A had been converted to products? I...
*May 16, 2007 by Janna*

**math**

Take 90 cm as the two sides of a triangle (Line B and C), with an angle of 32 degrees (Degree 'a'). Use the Law of Cosine to find out Line A's length. Round it up to the nearest digit.
*November 23, 2010 by Anonymous*

**Calculus**

Camille purchased a 10-yr franchise for a computer outlet store that is expected to generate income at the following rate measured in dollars/year. R(t) = 400,000 If the prevailing interest rate is 10%/year compounded continuously, find the present value of the franchise. (...
*July 17, 2013 by Anonymous*

**ECON!**

Happiness Is ... Being Old, Male and Republican Americans grow happier as they age, surveys find. And a new Pew Research Center survey shows the tendency is holding up as the economy tanks. Happiness is a complex thing. Past studies have found that happiness is partly ...
*May 18, 2009 by Anonymous*

**algebra/math**

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 40 people. (a) How many would you expect to be between 158 and 172 cm tall?
*August 27, 2011 by Anonymous*

**math**

Round to the nearest thousand, nearest hundred, and the nearest ten 7509
*October 7, 2010 by kim*

**math**

round to the nearest thousand, nearest hundred, nearest ten 8999
*October 7, 2010 by kim*

**math**

13 out of 25 write this percent notation
*February 9, 2009 by Grace*

**math**

waht is the percent and decimal of 9 out of 50
*November 16, 2010 by T.L.C*

**Math**

The associated exponential model for the value of a deposit after t years is A(t) = 7000(1 + (0.0394/12))^12t. At the start of which year will an investment of $7,000 made at the beginning of 2007 first exceed $11,000? (Round your answer the nearest whole number.) I don't ...
*February 9, 2012 by Anne*

**Maths**

3. Ohm’s law states that the current flowing in a circuit varies directly as the applied voltage and inversely as the resistance. In an experiment, the resistance was increased by triple the percentage by which the voltage was increased. A student calculated the percent change...
*November 17, 2012 by David*

**Promissory notes**

Jack signed a 9000.00 note at fleet bank. Fleet chared a 9 1/4% discount rate. If the loan is for 200 days, find A) the proceeds and B) the effective rate charged b the bank. (to the nearest tenth percent
*March 12, 2008 by Scott*

**Calculus Help!**

At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1500 seat performance hall. For every additional dollar charged for admission, the number of tickets sold drops by 95. a) What ticket price maximizes revenue? Round your answer to the nearest ...
*July 16, 2014 by Anonymous*

**FINANCE**

Answer both questions A).The treasurer of a German firm has €5 million to invest for three months. The annual interest rate in the Germany is 4 percent: the interest rate in the United Kingdom is 2 percent. The spot rate of exchange is €1.1/£ and the three-month forward rate ...
*August 5, 2010 by RICKY*

**math**

during a recent telethon people pledged $25 or $50. twice as many people pledged $25 as $50. altogether, $18000 was pledged. how many people pledged $25?
*April 2, 2010 by emily*

**math**

Find the area for the circle (use 3.14 for pi). Show your work. Round to the nearest tenth. the radius is 23 yd 22. Find the circumference of the circle (use 3.14 for pi). Show your work. Round to the nearest tenth.
*February 10, 2014 by melissa*

**chemistry**

The percentage of phosphourus in a detergent product may be determined by sample treatment including the precipitation of magnesium ammonium phosphate MgNH4PO4*6H2O (MW=245.41), using an excess of both magnesium and ammonium ions. The separated ans washed precipitate is then ...
*September 12, 2006 by bria*

**math**

your yearly office supply budget is $1200, you spend $350 each year on paper, what percent of your budget do you spend on paper
*May 27, 2012 by Lisa*

**Algebra**

interest formula A=2pf/b(q+1) find A to nearest percent p=12, f=$1209, b=$4900, Q=36 A=2*12*$1209/$4900(36+1) A=$29,016/$4900(37) A=$29,016/$181,300 A=0.160044126 so......is my answer 16%??????????
*March 21, 2008 by John*

**math**

Alicia planted 45 tulip bulbs last year.This year she plans to plant 65 bulbs. Find the percent of increase in the number of tulip bulbs to the nearest tenth.
*January 31, 2014 by maggie*

**chemistry**

magnesium has 3 isotopes. Magnesium-24 has a percent abundance of 78.99%. Magnesium-26 has a percent of 11.01%. what is the percent abundance of magnesium-25? assume that there are no other magnesium isotopes. how do i do this please help
*December 8, 2010 by monique n*

**Finance**

A dealer in government securities currently holds $875 million in 10-year Treasury bonds and $1,410 million in 6-month Treasury bills. Current yields on the T-bonds average 7.15 percent while 6-month T-bill yields average 3.38 percent. The dealer is currently borrowing $2,300 ...
*November 6, 2012 by winkyD*

**Finance**

Hi Tech Products has 35,000 bonds outstanding that are currently quoted at 102.3. The bonds mature in 11 years and carry a 9 percent annual coupon. What is the firm's aftertax cost of debt if the applicable tax rate is 35 percent?
*December 16, 2012 by Anonymous*

**statistics**

A poll asked 500 adults if they thought Ontario should produce more, less or maintain current production of ethanol. -160 people responded "more ethanol production" -136 people responded "less ethanol production" -155 people responded "maintain current production level" -49 ...
*October 5, 2014 by anon*

**algebra**

a public television station set a goal of $350,000 in pledges during a certain month. the total pledged was $525,000. What percent of the station's goal was reached?
*October 9, 2010 by bro*

**algebra**

a public television station set a goal of $350,000 in pledges during a certain month. the total pledged was $525,000. What percent of the station's goal was reached?
*October 9, 2010 by zac*

**Chemistry**

To calculate the percent error you would use the error in measurement divided by accepted value times 100 correct? So for an experiment in which you had to find the concentration of a dye in a powdered drink solution, to find the percent error would you use the number you ...
*October 12, 2011 by Hannah*

**ap chemistry**

For propanoic acid (HC3H5O2, Ka = 1.3 10-5), determine the concentration of all species present, the pH, and the percent dissociation of a 0.29 M solution. [H+] [C3H5O2-] [OH -] [HC3H5O2] pH percent dissociation
*April 6, 2011 by Ryu*

**math**

tim has a det of $872.23. If he pays 40 percent of the debt this month and 50 percent of the remainder next month, how much does tim still owe?
*March 26, 2014 by laura*

**Business Math 2**

Megan Green is interested in taking out a personal loan for $1,550. However, last year an identity theft scam left her with poor credit. Since then she has learned about the perils of identity theft from personal experience as well as from a variety of sources, including the ...
*April 26, 2011 by Nina*

**Math**

Is an estimate for the percent of a number always , sometimes or never greater than the actual percent of a number. Give an example or a counter example to support your answer
*October 23, 2013 by Anonymous *

**Csu**

3. What is the value in year 20 of a $1,000 cash flow made in year 8 if interest rates are 15 percent in years 6 through 13 and increase to 18 percent in the remaining years?
*October 12, 2014 by D*

**Finance**

3. What is the value in year 20 of a $1,000 cash flow made in year 8 if interest rates are 15 percent in years 6 through 13 and increase to 18 percent in the remaining years?
*October 13, 2014 by Stovall*

**nsc**

A survey has found that 3/4 of the people in a city own pets. Of those who own pets, 2/3 have cats. What fraction of thsoe surveyed own cats? You need to find 2/3 of 3/4. Since of means multiply, you need to multiply 2/3 times 3/4. What answer do you get? i got 72/144 which i ...
*June 29, 2007 by jeanie*

**MATH**

evaluate the numerical expression. you may use a calculator, being sure to follow the order of operations. Round the answer to the nearest whole number. 129+ 17*35/14 the 129 is separate from the fraction
*October 8, 2010 by m*

**algebra 2**

You invest $100,000 in an account with an annual interest rate of 4.5%, compounded semiannually. How much money is in the account after 10 years? Round your answer to the nearest whole number.
*July 14, 2011 by Anonymous*

**math**

Writing to explain: The digit 5 is usually rounded up, but it can also be rounded down. How would you round the numbers in the equation 9.5 +4.7+3.2+7.5= to the nearest whole number without getting an overestimate or an underestimate?
*January 17, 2014 by Jess*

**Conley**

Chicken Delight claims that 88 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 60 orders revealed that 50 were delivered within the promised time. At the .05 significance level, can we conclude that less than 88 percent of the...
*October 20, 2011 by Della*

**MacroEconomics HELP!**

I just need a little help on a few questions: - Why does a tax cut have a smaller multiplier than a hike in government spending if its the same amount? - Federal tax drops from 20 to 30 percent. Due to that income increases from 600BLN to 800BLN, logical explaination is that ...
*May 8, 2007 by Anonymous*

**rotational motion physics**

A 3.7 m diameter merry-go-round is rotating freely with an angular velocity of 0.63 rad/s. Its total moment of inertia is 1600 kg\cdot m^2. Four people standing on the ground, each of mass 70 kg, suddenly step onto the edge of the merry-go-round.
*November 19, 2011 by David colon*

**Maths**

- In a normal pack of cards, write down the odds against picking each card. a) a diamond b) a jack c) a red 10 d) a black picture card e) a picture card 1. A die is rolled 3 times. Estimate the chance of 2 or 3 no.'s being the same. Find the probability that i) the three nos ...
*February 19, 2010 by Kesha*

**uop**

How many riders would there have to be on a bus to yield (a) a 50 percent probability that at least two will have the same birthday? (b) A 75 percent probability? Hint: Use LearningStats.
*May 17, 2009 by sally*

**per.finance**

What might be the savings goal for a person who buys a five-year CD paying 4.67 percent instead of an 18-month savings certificate paying 3.29 percent? i just do not get this
*October 6, 2009 by jesse*

**economics**

A museum increases its admission price by 10 percent. As a result, total revenues increase by 10 percent. This implies that, ignoring the sign, the price elasticity of demand for admission is:
*October 22, 2013 by Peter*

**Algebra 1**

1.Bananas are usually 49 cents a pound. This week they are on sale for 29 cents a pound. What is the percent off? 2.Lydia paid $32 for a book that was originally $43. What is the percent discount. I got 1.59% 2.74%
*February 10, 2014 by Anonymous*

**Chemistry 11**

So I did a lab determining the chemical formula of a hydrate. We had to find the molecular formula of a hydrate of copper (2) sulphate, CuSO4 .xH2O. My observation table looks like this: Mass of clean, dry test tube: 21.6g Mass of test tube + hydrated copper (2) sulphate: 24.1...
*November 18, 2014 by Katherine*

**Economics**

If Starbucks raises its price by 7 percent and McDonald’s experiences a 0.3 percent increase in demand for its coffee, what is the cross-price elasticity of demand?
*May 27, 2012 by Carlos*

**Math**

Whcih is correct: 1/2% of 50 is 25. OR.. 1/2 of 50 is 25? The difference of this two is that choice number one has a percent sign and the second choice doesn't have a percent sign.
*October 4, 2012 by Losa*

**math**

When solving for the percent composition of a given compound, the percent of each element in the compound must be found and reported. True false TRUE
*November 9, 2012 by shana*

**Math**

Jim Tree borrowed $1,000 at 10 percent for one year. He paid a $45 processing fee and $100 in interest. He calculated the APR to the nearest tenth.
*October 16, 2010 by Ram*

**Math (MS112) **

What rate of interest, to the nearest tenth of a percent, compounded quarterly is needed for an investment of $1700 to grow to $2600 in 12 years? I am given the formula A=P(1+r/n)^nt
*November 27, 2012 by Taylor*

**Physics**

Please Help I have no idea how to approach this problem In a "Rotor-ride" at a carnival, people rotate in a vertical cylindrically walled "room." If the room radius was 5.7m , and the rotation frequency 0.35 revolutions per second when the floor drops out, what minimum ...
*May 31, 2014 by Diana*

**Maths**

Eleven people, 7 men and 4 women, successfully completed their study at the School of Astronautics. A team of 6 people needs to be selected from them for the next intergalactic travel. In how many ways can 6 astronauts be selected, if at least 2 women and 3 men must be in the ...
*August 27, 2009 by MathsHelpNeeded*

**econ**

I'm in an econ class and i need at least 4 connections and the reason from this article. Happiness Is ... Being Old, Male and Republican Americans grow happier as they age, surveys find. And a new Pew Research Center survey shows the tendency is holding up as the economy tanks...
*May 18, 2009 by Anonymous*

**Stasistics**

Here is the distribution of educational level of adults aged 25 and over in the United States in the year 2012. Intervals include the left endpoint but not the right. You can define "17+" to mean "17 to 22." The percent with 22 or more years of education was too small to make ...
*February 25, 2013 by A*

**Chemistry**

The theoretical percent of Copper (II)Oxide is 79.9%. What are two reasons why the percent of Copper in Copper (II) may vary from 79.9%
*March 17, 2008 by Shaun*

**percent markup**

If the markup is $6 on a pair of jeans which cost $22, what is the percent markup based on selling price?
*August 21, 2014 by Leslie*

**fraction problem pecentage**

what percent more than 25 is 35? Express your answer with a percent. Teach me how to do this. Teach me teach me how to do this.
*October 24, 2014 by Skywaimasika*

**business**

In what ways do laws like the Americans with Disabilities Act affect human services organizations? If you look into this you will see that the ADA requires accommodations for indivual with disabilities. These would include people with handicaps and also "little people" such as...
*April 10, 2007 by Kasey*

**english**

please help me to corect grammar: .those who are alwasys correcting other people, just showing off and pretending being smart but in reality nothing to prove himself but only the words. weel, uneducated people would always do something words to say to embarras educated people.
*June 20, 2012 by jessie*

**4gr math **

round 64 to the nearest ten. round 87 to the nearest ten. then add the rounded numners.
*March 18, 2010 by jojo*

**math**

in 4a and 4c there are same no of girls total there are 56 people in both the classes if 1/3 of people in 4a and 1/4th of people in 4c are girls find total number of girls in both the classes
*May 2, 2011 by Anonymous*

**probability**

How many ways can 12 people be seated about a round table?
*October 8, 2009 by Sharon*

**Finance/Math**

1. Present Values. Compute the present value of a $100 cash flow for the following combinations of discount rates and times. a. r = 8 percent. t = 10 years b. r = 8 percent. t = 20 years c. r = 4 percent. t = 10 years d. r = 4 percent. t = 20 years 2. Future Values: Compute ...
*March 19, 2007 by Ethan*

**Gen. Chemistry lab**

Trying to find mass percent of acetic acid in 25 drops of .683M NaOH solution are required to neutralize 10 drops of cleaning vinegar. Assume that the density of the cleaning vinegar is the same as the density of regular vinegar which is 1.05 g ml-1 You need to clean up the ...
*March 3, 2007 by Toni*

**Math**

Need help. A microwave oven sold for. $95 and discounted to $45. What is the percent of decrease? I got 47.4% is this right ? A men's store. Reduced. The price of a hat from $12.50 to $10.00 what is percent of discount? I got 1.25 or 1.3% is this right?
*March 20, 2012 by Marko*

**math**

A SERVING TRAY MADE OF BRASS WEIGHS 21 OUNCES. THIS BRASS IS AN ALLOY OF 70 PERCENT COPPER AND 30 PERCENT TIN. WHAT IS THE WEIGHT IN COPPER? CHECK MY SOLUTION PLEASE! 70% OF 21 OZ= 30Z
*October 29, 2012 by BOOKER*

**Finance**

The Seneca Maintenance Company currently (that is, as of year 0) pays a common stock dividend of $1.50 per share. Dividends are expected to grow at a rate of 11 percent per year for the next 4 years and then to continue growing thereafter at a rate of 5 percent per year. What ...
*February 22, 2012 by Raechelle*

**Math**

To determine what effect the salespeople had on purchases, a department store polled 700 shoppers as to whether or not they had made a purchase and whether or not they were pleased with the service. Of those who had made a purchase, 125 were happy with the service and 111 were...
*November 20, 2009 by Kimberly*

**Calculus**

The half-life of radioactive strontium-90 is approximately 31 years. In 1960, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 11 percent of the original ...
*January 13, 2011 by Brittany*

**Math**

The half-life of radioactive strontium-90 is approximately 28 years. In 1962, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 6 percent of the original ...
*August 28, 2012 by Jason*

**Math**

The half-life of radioactive strontium-90 is approximately 32 years. In 1961, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 8 percent of the original ...
*September 19, 2012 by Annie*

**Math**

A contact lens has a spherical shape and pretend it is being held on a finger ready to put into an eye. (All measures are in millimetres.) Suppose we take the semi-circular cross-section through the middle of the lens. Find the equation of the lens if the centrepoint of the ...
*April 13, 2012 by Aria*

**math**

The population of Norson, the largest city in Transitania, is 50% of the rest of the population of Transitania. The population of Norson is what percent of the entire population of Transitania? Assume there are 100 people in Transitania.
*March 2, 2007 by :)*

**math**

Write an expression from the model below and then simplify the expression. Positive Negative Which equation is modeled on the number line below? (-56)/(-8) = 3- (-4)= 7.1 (Rational Numbers) No Calculators Fill in the chart below. Base of 10 Whole Number or Fraction Decimal ...
*February 2, 2012 by Michelle*

**financial Managerial **

The State of Idaho issued $2,000,000 of seven percent coupon, 20-year semiannual payment, tax-exempt bonds five years ago. The bonds had five years of call protection, but now the state can call the bonds if it chooses to do so. The call premium would be five percent of the ...
*April 9, 2011 by abdelrazeg*

**Consumer math**

How to Compute percent of change in cost: Item:1 lb.apples price in 1970: 0.25 what is the Present price and what is the percent of change?
*October 8, 2008 by Anna*

**Math**

Which is correct: 1/2% of 50 is 25. OR.. 1/2 of 50 is 25? The difference of this two is that choice number one has a percent sign and the second choice doesn't have a percent sign.
*October 4, 2012 by Losa*

**Calculus**

The area of a wetland drops by 1/4 every 8 years. What percent of its total area disappears after 40 years? Percent lost %?
*March 11, 2013 by Orla*

**chemistry**

It is ok to have a negative percent error? I got a negative value for the percent error of the enthalpy of the formation of methane gas
*July 20, 2014 by Liz*

**Finance**

Th e Seneca Maintenance Company currently (that is, as of year 0) pays a common stock dividend of $1.50 per share. Dividends are expected to grow at a rate of 11 percent per year for the next four years and then to continue growing thereaft er at a rate of 5 percent per year. ...
*November 20, 2011 by Stacie*

**math**

Bart's drama club put on a play.There were 843 people in the audience.Each ticket to the play cost $8.The audience was seated in 3 sections.If each section had the same number of people,how many people were in each section?
*March 7, 2011 by samantha*

**Stats**

An airline estimates that 91% of people booked on their flights actually show up. If the airline books 80 people on a flight for which the maximum number is 78, what is the probability that hte number of people who show up will exceed the capacity of the plane?
*October 12, 2011 by Kim Reed*

**statistics**

an airline estimates that 97%of people booked on their flights actually show up.if the airline books 70 people on a flight for which the maximum number is 68,what is the probability that the number of people who show up will exceed the capacity of theplane
*December 5, 2009 by lauren*

**finance**

You own a bond that has an 8 percent coupon and matures 8 years from now. You purchased this bond at par value when it was originally issued. If the current market rate for this type and quality of bond is 8.25 percent, then you would expect
*October 25, 2009 by Anonymous*

**Finance**

Ngata Corp. issued 12-year bonds 2 years ago at a coupon rate of 8.4 percent. The bonds make semiannual payments. If these bonds currently sell for 105 percent of par value, what is the YTM?
*April 5, 2011 by Anonymous*

**finance**

Ngata Corp. issued 18-year bonds 2 years ago at a coupon rate of 9.6 percent. The bonds make semiannual payments. If these bonds currently sell for 101 percent of par value, the YTM is
*March 29, 2012 by Anonymous*

**Finance**

Crossfade Co. issued 15-year bonds two years ago at a coupon rate of 6.9 percent. The bonds make semiannual payments. Required: If these bonds currently sell for 94 percent of par value, what is the YTM?
*February 25, 2014 by Alec*

**math**

Suppose the total cost function for manufacturing a certain product C(x) is given by the function below, where C (x) is measured in dollars and x represents the number of units produced. Find the level of production that will minimize the average cost. (Round your answer to ...
*November 5, 2012 by Renee*

**math**

Suppose the total cost function for manufacturing a certain product C(x) is given by the function below, where C (x) is measured in dollars and x represents the number of units produced. Find the level of production that will minimize the average cost. (Round your answer to ...
*November 14, 2012 by Britney*

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