Monday

October 20, 2014

October 20, 2014

Number of results: 101,216

**Statistics**

A researcher wants to see if gender plays a role in where we sit in a restaurant. An analysis of survey data yields the following contingency table, chi-squared value, and p-value: Tabulated statistics: Gender, Seating Rows: Gender Columns: Seating Back Front Middle All Female...
*July 26, 2012 by Sheri*

**math**

14.what value of n will result in a mean if 31 15.what value of n will result in a median of 23 15.what value of a will result in a range of 84 14,46,19,10,39,22,24,77,n Refresh your memory about the defnition of median, mode and range of a set of numbers. Then pick a value of...
*March 4, 2007 by alice*

**physics**

what distance should you keep between you and the car in front of you if the traffic is moving at 65mph? Your reaction time is 1s, and both the cars can decelerate at the same rate. Include reasonable estimate for the length of the car (you don't want your bumper to end up at ...
*October 15, 2007 by Tammy*

**Physics**

what distance should you keep between you and the car in front of you if the traffic is moving at 65mph? Your reaction time is 1s, and both the cars can decelerate at the same rate. Include reasonable estimate for the length of the car (you don't want your bumper to end up at ...
*October 15, 2007 by Tammy*

**physics**

what distance should you keep between you and the car in front of you if the traffic is moving at 65mph? Your reaction time is 1s, and both the cars can decelerate at the same rate. Include reasonable estimate for the length of the car (you don't want your bumper to end up at ...
*October 15, 2007 by Tammy*

**physics**

The CM of an empty 1300 kg car is 2.40 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.80 m from the front of the car, and three people sit in the back seat 3.80 m from the front? Assume that each person ...
*March 11, 2010 by Anonymous*

**physics**

The CM of an empty 1300 kg car is 2.40 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.80 m from the front of the car, and three people sit in the back seat 3.80 m from the front? Assume that each person ...
*March 14, 2010 by Anonymous*

**Calculus HELP plz**

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=4x^1/2,y=5,2y+1x=5 Do you really mean "2y+1x=5" ? It is not customary to use the coefficient 1 in front of a variable. It is unnecessary. ...
*May 5, 2007 by jimmy*

**Math**

Write an addition problem in which, when the addends are rounded to the nearest ten, the sum is 90. Then explain how you use estimation to solve the problem.
*May 15, 2012 by Kelly*

**math**

An initial-value problem is given by the differential equation, f(x,y) = x + y, y(0) = 1.64 The Euler-midpoint method is used to find an approximate value to y(0.1) with a step size of h = 0.1. Then use the integrating factor method, to find the exact value of y(0.1). Hence, ...
*September 26, 2012 by enigma*

**Math**

Yi Chen made a $6,400 investment at the beginning of a year. By the end of the year, the value of the investment had decreased by 8.2%. What was it's value at the end of the year? How would I do this? I am so very lost! Value= 6400(1-.082) would it not be $6400/100 then ...
*May 27, 2007 by Heather*

**Math**

160,656 underlined is 1
*September 16, 2014 by Faith*

**Repost-Physics 1**

Two railroad cars, each of mass 2.2 104 kg, are connected by a cable to each other, and the car in front is connected by a cable to the engine as shown in the figure below. The cars start from rest and accelerate to a speed of 1.7 m/s after 1 min. a)Find the work done by cable...
*October 9, 2012 by John*

**Physics 1**

Two railroad cars, each of mass 2.2 104 kg, are connected by a cable to each other, and the car in front is connected by a cable to the engine as shown in the figure below. The cars start from rest and accelerate to a speed of 1.7 m/s after 1 min. a)Find the work done by cable...
*October 8, 2012 by John *

**calc**

Consider the function below. (Round the answers to three decimal places. If you need to use - or , enter -INFINITY or INFINITY.) f(x) = 4 + 4x2 - x4 (a) Find the intervals of increase. (Enter the interval that contains smaller numbers first.) Find the intervals of decrease. (...
*April 3, 2010 by Anonymous*

**Barton County Community College**

What is the proper adjusting entry at June 30, the end of the fiscal year, based on a prepaid insurance account balance before adjustment, $15,500, and unexpired amounts per analysis of policies, $4,500?
*October 7, 2008 by Angela*

**Math**

Using the term structure in Problem 29 what is the present value of an investment that pays $100 at the end of each of years 1., 2. and 3? If you wanted to value this investment correctly using the annuity formula which discount rate should you use?
*June 7, 2014 by J*

**Math**

The nominal rate of interest is 8% and the rate of inflation is 5%. A single deposit is invested for 10 years. Let: A= value of the investment at the end of 10 years measured in "constant dollars," i.e. in dollars valued at time 0. B= value of the investment at the end of 10 ...
*May 11, 2011 by Katie*

**center of mass-please help**

The CM of an empty 1170 kg car is 2.50 m behind the front of the car. How far from the front of the car will the CM be when two people sit in the front seat 2.8 m from the front of the car, and three people sit in the back seat 3.90 m from the front? Assume that each person ...
*March 9, 2010 by Anonymous*

**Physics Mehanics**

A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it hits the floor, assuming that the end on the floor does not slip. (Hint: Consider the stick to be a thin rod and use the conservation of energy ...
*February 24, 2011 by D*

**math**

A rule of thumb used by car dealers is that the trade-in value of a car decreases by 30% each year. That is, the value at the end of any year is 70% of its value at the beginning of the year A.Suppose that you own a car whose trade-in value is presently $2350. How much will ...
*April 7, 2010 by kaylarae*

**corp. finance**

What is the future value at the end of year 20 of depositing $5,000 today, $3,500 at the end of years 1, 2 and 3, $5,000 at the end of years 4, 5, 6 and 7 and $4,250 at the end of years 8, 9, 10, 11 and 12 into an account that pays 13% p.a.?
*October 22, 2009 by James *

**Estimation decimal quotient **

Use compatible numbers to find the each quotient ,2.90 divided by 29,48 divided by 3.2, 0.18 divided by 0.33,152 divided by 5.12,41.9 divided by 19,33.90 divided by 10.2, 502 divided by 9.5, 180.8 divided by 6 , 48 divided by 3.33, 0.65 divided by 5.1,18.2 divided by 11, 55 ...
*October 19, 2014 by Juliet*

**Chemistry**

Can someone confirm that I'd be doing this right? If an 0.520 m aqueous solution freezes at -3.00 C, what is the van't Hoff factor, i, of the solute? It says I can find the Kf values on a table. I had no idea which Kf value to use... so i just used water... is that right? If ...
*February 16, 2012 by David*

**maths**

An initial-value problem is given by the differential equation, f(x,y) = x + y, y(0) = 1.64 The Euler-midpoint method is used to find an approximate value to y(0.1) with a step size of h = 0.1. Then use the integrating factor method, to find the exact value of y(0.1). Hence, ...
*September 29, 2013 by Matthew*

**Fundamentals of Cost Analysis (Economic Analysis)**

What would be the present value of an item that has a salvage value of $25,000 at the end of five years? Assume a discount rate of 3.8% for an end-of-year factor. Carry calculations to four decimal places.
*August 19, 2010 by D*

**economics**

What would be the present value of an item that has a salvage value of $25,000 at the end of four years? Assume a discount rate of 3.8% for an end-of-year factor. Carry calculations to four decimal places. $25,950 $24,085 $20,747 $21,535
*May 8, 2014 by ed*

**Physics**

Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle. .63m in front of the rear wheels and 2.3m behind the front wheels. The mass of the truck and its contents is 9155 kg. Find the magnitudes of the forces ...
*November 25, 2010 by shai*

**physics**

A car is behind a truck going 23.0 m/s on the highway. The driver looks for an opportunity to pass, guessing that his car can accelerate at 2.2 m/s2, and he gauges that he has to cover the 24.0 m length of the truck, plus 10 m clear room at the rear of the truck and 10 m more ...
*May 13, 2007 by micole*

**Science**

Starting from rest, a boulder rolls down a hill with constant acceleration and travels 3.00 during the first second. How far does it travel during the second second? How fast is it moving at the end of the first second? How fast is it moving at the end of the second second? If...
*September 19, 2006 by Morgan*

**math**

marcus drives a delivery truck and spent$89 on gas his frist week.if he drives 8 months using about this much gas each week,how much would he spent on gas ?use estimation to find the answer to the nearest $1000.
*February 28, 2011 by cindy*

**calculus**

How do you find the x-intercept of a cubic graph? For example y=2x^3+2, also, how does the 2 in front of the x influence the graph when compared to having a one in front?
*April 12, 2011 by Ally*

**Physics**

I have been working on this homework question for a bit, but I just can't get it. Please help me! Where must an object be placed with respect to a convex lens (f=20cm) to generate an upright image that is 4 times as large as the object? 10 cm in front 10 cm behind 55 cm in ...
*April 25, 2011 by Sonia*

**Physics**

A person who is properly constrained by an over-the-shoulder seat belt has a good chance of surviving a car collision if the deceleration does not exceed about 30 "'s". Assuming uniform deceleration of this value, calculate the distance over which the front end of the car must...
*September 24, 2012 by Amie*

**Algebra**

5x=1/2y-1, find value of X; 1/4y=10x-1, find value of Y (use substitution)
*March 10, 2008 by Linda*

**physics**

The figure shows a uniform beam of mass m pivoted at its lower end, with a horizontal spring attached between its top end and a vertical wall. The beam makes an angle with the horizontal. (a) Find expression for the distance d the spring is stretched from equilibrium. (Use ...
*April 30, 2013 by annetee*

**statistics**

Find 10-th, 60-th and 75-th percentiles in each of your data set, then write down each value that corresponds to those percentiles. Now use those values to find sample percentiles empirically (Suppose value a corresponds to 10-th percentile in my data set. After finding the ...
*November 20, 2011 by metu*

**Algebra**

I need help with solving these absolute value inequalities. I have to graph them as well. y< |x+2|+4 and y>|x+5|+3 I just don't know what to do without a coefficient in front of the absolute value!
*September 12, 2013 by Mimi*

**MATH**

Erica uses 39 inches of ribbon to make wreaths to sell at a craft fair. She has 8,656 inches of ribbon to use. About how many wreaths can she make.
*September 12, 2013 by Nazariyah*

**SS**

During an occluded front, a fast-moving cold front overtakes a slower moving ____ front.
*February 7, 2013 by Bell*

**Managerial Accounting**

Kim Johnson purchased an asset for $80,000. Annual operating cash inflows are expected to be $30,000 each year for four years. At the end of the life of the asset, Kim will not be able to sell the asset because it will have no salvage value. Required: What is the net present ...
*April 13, 2013 by Lisa*

**Calculus II**

With Taylor/Maclaurin polynomials Use the Remainder Estimation Theorem to find an interval containing x = 0 over which f(x) can be approximated by p(x) to three decimal-place accuracy throughout the interval. f(x) = sin x p(x) = x - 1/6 * x^3 The book answer is (-.569, +.569...
*June 14, 2009 by Sean*

**Math**

Find how much must be deposited now (present value) at % simple interest so that in 6 years an account will contain $8958 (future value). present value = $ WHAT FORMULA DO I NEED TO USE TO HELP ME SOLVE THE PROBLEM?
*September 10, 2010 by AMANDA*

**Calculus**

Use the intermediate value theorem to find the value of c such that f(c) = M. f(x) = x^2 - x + 1 text( on ) [-1,12]; M = 21
*June 7, 2013 by Tee*

**math**

A borrower received a 30-year ARM mortgage loan for $120,000. Rate caps are 3/2/6 (first adjustment/subsequent adjustments/total over the life of the loan). The start rate was 3.50% and the loan adjusts every 12 months for the life of the mortgage. The index used for this ...
*October 3, 2012 by mahagoni*

**Physics**

A 4.00 103-kg car has a speed of 9 m/s. The car then hits a tree. The tree doesn't move and the car comes to rest. (a) Find the change in kinetic energy of the car. . J (b) Find the amount of work done in pushing in the front of the car. J (c) Find the size of the force that ...
*May 10, 2012 by Haley *

**College Algebra**

Value of Computer Software The value V, in dollars, of a shopkeeper's inventory is software program is given by V=-50t + 300, where t is the number of years since the shopkeeper first bought the program. SHOW YOUR WORK for a and c. a) Find the value of the software after 0 ...
*September 4, 2011 by Anonymous*

**math**

Direct variation Y is proportional to x. Use the x value & y value to find a linear model that relates y and x. x=5, y=9 X=11, y=1.5
*June 3, 2014 by Anonymous*

**statistics**

use technology to find the P-value for a right-tailed test with n=21 and test statistic t=2.065 apparently, i don't have a stat calculator or statistical software to use to find the answer. so i need help how to find it by using the t distribution table..
*May 21, 2010 by shasha*

**advance algebra**

use synthetic substitution to find the value of the given polynomial function at the indicated value. a. P(x)=x^4+x^3-4x^2-8x; P(-1)
*July 23, 2014 by Nialleen*

**Finance**

An investment will provide Nicholas with $100 at the end of each year for the next 10 years. What is the present value of that annuity if the discount rate is 8% annually? What is the present value of the above annuity if the payments are received at the beginning of each year...
*July 13, 2014 by Aina*

**chemistry**

A first-order reaction is 40% complete at the end of 50 minutes. What is the value of the rate constant (in min^-1)? A. 1.8 x 10^-2 B. 1.0 x 10^-2 C. 1.2 x 10^-2 D. 8.0 x 10^-3 E. none of these how would i approach this problem? i know that to find the rate constant, i could ...
*May 26, 2008 by jesse may*

**Accounting**

Basic NPV: No Salvage Value or Taxes Carrie Rushing is considering the purchase of a new production machine that costs $120,000. She has been told to expect decreased annual operating expenses of $40,000 for four years. At the end of the fourth year, the machine will have no ...
*April 13, 2013 by Marie*

**Calculus**

The present value of a building in the downtown area is given by the function P(t) = 300,000e^-0.09t+t/2 f or 0 t 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a point ...
*April 11, 2013 by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function P(t) = 300,000e^-0.09t+t/2 f or 0 t 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a point ...
*April 11, 2013 by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+t/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*April 12, 2013 by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*April 12, 2013 by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*April 12, 2013 by Deeno*

**Calculus**

The present value of a building in the downtown area is given by the function p(t) = 300,000e^-0.09t+(t)/2 f or 0 _< t _< 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value of t0 that gives a ...
*April 14, 2013 by Deeno*

**algebra 2**

Use substitution to solve the system 3x + 7y = −3 (1) 7x + y = −53 (2) Find the value of x. (part 2 of 2)Find the value of y.
*February 17, 2011 by briana*

**math - probability**

Imagine a LONG bike with a total of 4 wheels - 2 in the front and 2 in the back. For the bike to work at all, at least 1 front wheel and 1 back wheel must be operational. All 4 tires are the same and each, individually, has probability 'p' of failing. What is the probability ...
*November 3, 2006 by andrew*

**Math**

Jerry earned $18,500 one year and then received a 10.5% raise. What is his new yearly salary? Yi Chen made a $6,400 investment at the beginning of a year. By the end the year,the value of the investment had decreased by 8.2%. What was its value at the end of the year
*March 6, 2008 by Danielle*

**Plz Hel, word problem:)**

I have tried hard to solve, but I'm stuck.... Lets use our knowledge of quadrantic equations to analyze a real world business application. If P dollars is invested at r rate of interest compounded anually t years, then the amount of money, A, accummulated at the end of t ...
*September 24, 2010 by Jesee*

**Math - Oh my gosh please help!**

Lisa's Running Distances Day Distances (in kilometers) Monday 2.05 Tuesday 4.10 Wednesday 3.80 Thursday 1.95 Friday 4.05 Estimate the average distance, in kilometers, Lisa ran for the five days. Explain your estimation strategy. Based on your previous answer, estimate the ...
*December 12, 2013 by Anonymous*

**Intro to probability**

Two balanced coins are tossed. What are the expected value and the variance of the number of heads observed? ================================== I'm confused on how to start. I don't know how many times im suppose to toss coin, and how to set up my table for the expected value ...
*February 23, 2008 by amelie*

**grade 12 accounting**

The account accumulated amortization - equipment is a credit account and it has 1,200 in it on the work sheet for the month ended march 31, 2003. I have to make an adjustment to it, and the adjustment is: amortization for march is 100. Do I credit or debit the 100 to the ...
*September 17, 2010 by kat*

**calculus**

First I would find the first derivative which is the slope and then would I plug in the given value into the original equation to find y and then use y-y_1=m(x-x_1)? Find the euation of the tangent line at the given value a) y=ln abs(x+4) x = -3 b) y= (x^2 +5)/(x+1) x=1 a) I ...
*May 2, 2007 by Tammy*

**Business Communication**

Which of the following would NOT be an informative or positive message? a.Summary b.Claim adjustment c.Transmittal d.Direct request I'm shure that Summary and Transmittal could be positive and informative.But I'm really confused about Claim adjustment and Direct request.
*March 18, 2011 by MaS*

**math**

Uniform rod AB with end B resting against rough vertical wall. Coefficient of friction between wall and rod is μ. Rod is 2m long and has mass 3kg. Rod is kept in limiting equilibrium by a light inextensible string, one end of which is attached to the end A of the rod and ...
*April 23, 2014 by Michael*

**Edu 656-Education**

Reflect on your readings this week and describe at least three take-away concepts.
*February 13, 2014 by Fannie*

**Accounting**

Jack Hammer invests in a stock that will pay dividends of $2.00 at the end of the first year; $2.20 at the end of the second year; and $2.40 at the end of the third year. Also, he believes that at the end of the third year he will be able to sell the stock for $33. What is the...
*January 10, 2010 by Robert*

**Math**

Jack Hammer invests in a stock that will pay dividends of $2.00 at the end of the first year; $2.20 at the end of the second year; and $2.40 at the end of the third year. Also, he believes that at the end of the third year he will be able to sell the stock for $33. What is the...
*January 11, 2010 by Robert*

**math**

Yi chen made a $6,400 investment at the beginning of a year. By the end of the year the value of the investment had decreased by 8.2% What was ts value at the end of the year?
*September 2, 2008 by Peggie*

**math**

Yi Chen made a $6,400 investment at the beginning of a year. By the end of the year, the value of the investment had decreased by 8.2%. What was its value at the end of the year?
*August 11, 2010 by Anonymous*

**math**

N=x-y-z Where x,y,z are variable representation of some digit (0 to 9) Alok is like to maximize N while Bhanu Is like to minimize it towards this end ,Alok chooses a single digit number and bhanu substitute this for a variable of her choice (x,y or z)also chooses the next ...
*November 13, 2010 by Soumava*

**web design**

What are two front-end issues and two back-end issues when it comes to web accessibility?
*January 7, 2010 by tim anderson*

**math**

what formulas do i use for this: Investments Suppose $10,000 is invested at an annual rate of 5% for 10 years. Find the future value if interest is compounded as follows. A) Annually B) Quarterly C) Monthly D)Daily (365 days) In each case, use the formula Future value = ...
*June 19, 2007 by student*

**Accounting Adjustment**

Use the straight line amortization method. Equipment amortizes 20 percent per year. Trial Balance for March 31, 2005 shows equipment worth $90,030.
*February 22, 2007 by Colleen*

**English Grammar**

She is sitting in the back of the car. She is sitting in back of the car. She is sitting in the front of the car. She is sitting in front of the car. -------------------- What is the difference between them? Do we have to use 'the' or not? Is she inside the car or ouside the ...
*May 20, 2008 by John*

**Finance**

What is the present value (or purchase price) of an annuity product which will pay you $2,000 at the end of each year for the next 15 years? Use an interest rate of 9%.
*February 6, 2012 by john*

**stats**

A set of 50 data values has a mean of 30 and a variance of 4. I. Find the standard score (z) for a data value = 26. II. Find the probability of a data value < 26. I think the first part is z=(26-30)/4 = -4/4 = -1. I am not sure how to go about the second problem. I could ...
*July 20, 2011 by Celest*

**math**

With regards to question J: The variables x and y are connected by the equation y = x2 - x - 5. Some corresponding values of x and y are given in the table below. x -4 -3 -2 -1 0 1 2 3 4 5 y 15 7 a -3 -5 b -3 1 7 15 (a) Calculate the values of a and b (b) Use 2 cm to represent...
*January 24, 2011 by jun*

**Math**

Bond : Face Value = 100,000 State Rate = 9% Semi-annual Payments Term = 3years Market Rate of 12% Amortize the bond to determine: Year 1 Interest Expense End of Year 1 carrying value. My Answers: Year 1 Interest Expense = 5,621.05 End of Year 1 carrying value =94,805.14 Am I ...
*December 7, 2011 by Matt*

**u n i**

The trial balance of Bair Company includes the following balance sheet accounts. Identify the accounts that require adjustment. For each account that requires adjustment, indicate (a) the type of adjusting entry (prepaid expenses, unearned revenues, accrued revenues, and ...
*April 28, 2012 by stt*

**accounting**

The trial balance of Bair Company includes the following balance sheet accounts. Identify the accounts that require adjustment. For each account that requires adjustment, indicate (a) the type of adjusting entry (prepaid expenses, unearned revenues, accrued revenues, and ...
*October 30, 2012 by cherry*

**Physics**

A set of fossilized triceratops footprints discovered in Texas show that the front and rear feet were 3.2 m apart. The rear footprints were observed to be twice as deep as the front footprints. Assuming that the rear feet pressed down on the ground with twice the force exerted...
*November 3, 2011 by Cooper*

**science**

OBJECTIVE: to find out which of two indicators, methyl orange or phenolphthalein, gives more reliable and consistent results in the titration of H3PO4 with NaOH. REQUIREMENT: (1). Phosphoric acid solution of unknown concentration. (2). Standard NaOH solution. (3). Methyl ...
*October 28, 2013 by somiah*

**English**

There were 40 seats for older children in the front(at the front) and benches for little children at the back(in the back). ------------------ Q1: Which do we have to use 'in' or 'at'? Are both OK? Q2: Which one is right, 'older children' or 'elder children'?
*March 13, 2014 by rfvv*

**math/calc**

The hypotenuse of a right triangle has one end at the origin and one end on the curve y+x^2e^(-3x), with x > or = 0. One of the other two sides is on the x-asis, the other side is parallel to the y-axis. Find the maximum area of such a triangle. At what x-value does it occur?
*March 30, 2010 by miley*

**math/calc**

The hypotenuse of a right triangle has one end at the origin and one end on the curve y+x^2e^(-3x), with x > or = 0. One of the other two sides is on the x-asis, the other side is parallel to the y-axis. Find the maximum area of such a triangle. At what x-value does it occur?
*March 31, 2010 by miley*

**math**

N=9+x+y-z Where x,y,z are variable representation of some digit (0 to 9) Alok is like to maximize N while Bhanu Is like to minimize it towards this end ,Alok chooses a single digit number and bhanu substitute this for a variable of her choice (x,y or z)also chooses the next ...
*November 8, 2010 by reenu*

**physics**

A convex spherical mirror has a focal length of -20 cm. An object is placed 30 cm in front of the mirror on the mirror's axis. Where is the image located? Answer 12 cm in front of the mirror 60 cm behind the mirror 60 cm in front of the mirror none of the given answers
*March 17, 2014 by shirly*

**physics**

A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it hits the floor, assuming that the end on the floor does not slip. (Hint: Consider the stick to be a thin rod and use the conservation of energy ...
*December 19, 2010 by teal*

**Rounding and estimating**

estimate.State your standard(rounding,front-end, or clustering.) 91.7 + 88.6 + 89.1 + 92.52 + 90.6 3.9 + 8.1 + 2.06 Please and Thank-You Standard = what process you always use. For example, if you always round up for 6 or .6, etc., then that's your standard. Using that ...
*October 9, 2006 by Bowier4*

**physics**

If a wave travels toward a barrier where the end is not fixed and reflects describe in either words or a drawing what the reflected wave will look like. You can see in an animation what happens at: http://www.kettering.edu/~drussell/Demos/reflect/reflect.html There is an even ...
*March 29, 2007 by anonymous*

**Exact value**

How to find the exact value of lim (2^h - 1)/ h h->0 Thanks in advance. If you use lim dx->0 of [f(a + dx) - f(a)]/dx = f'(a) and recognize 1=2<sup0. Then use f(x)=2x Thus lim dx->0 [20+dx - 2<sup0]/dx = f'(0). This means find d/dx 2x and evaluate at x=0. You ...
*October 20, 2006 by Jen*

**physics **

An object 5cm is placed 30cm in front of a concave mirror.The image is 60cm in front of the mirror.Find (a) the focal length of the mirror.(b) the magnification.(c)the size of the image
*November 10, 2011 by chrystabelle*

**physics**

The drawing below shows an elastic cord attached to two back teeth and stretched across a front tooth. The purpose of this arrangement is to apply a force to the front tooth. (The figure has been simplified by running the cord straight from the front tooth to the back teeth.) ...
*February 17, 2011 by mayrel*

**Algebra**

Use properties of logarithms to find the exact value of each expression. Do not use a calculator. 8^log 8^5
*April 7, 2013 by Kendall*

**roslyn**

Margo's soccer coach brought a large bag of watermelons to practice. The mass of the bag with all the watermelons in it was 12 kilograms. Explain how you could use estimation to figure out how many watermelons are in the bag.
*April 24, 2013 by Jennifer*

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