Wednesday

December 7, 2016
Number of results: 83,213

**maths**

If the expression (x^2+2x−1)^8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x? Details and assumptions 0 is an even number.

*April 30, 2013 by ianian*

**Algebra Question 1**

5. Business B pledged $20 million less than twice the amount pledged by Business A. Business C pledged $200 million less than twice the amount pledged by Business B. If x represents the amount pledged by the Business A, write expressions to show the amounts pledged by Business...

*October 6, 2011 by Jab*

**English**

1. He is less tall than Tom. 2. Tom is taller than he. 3. He is less smart than Tom. 4. Tom is smarter than he. 5. He is less big than Tom. 6. Tom is bigger than he. 7. He is less careful than Tom. 8. Tom is more careful than he. 9. He is no thoughtful than Tom. 10. Tom is ...

*July 13, 2016 by rfvv*

**Math: Need Answer to study for a quizz. Help ASAP **

Estimate the area under the curve f(x)=x^2-4x+5 on [1,3]. Darw the graph and the midpoint rectangles using 8 partitions. Show how to calculate the estimated area by finding the sum of areas of the rectangles. Find the actual area under the curve on [1,3] using a definite ...

*November 18, 2010 by Jesse*

**programming**

I am supposed to make a pseudocode for a fat gram calculator and I want to know if my code is correct. This is the instructions: Design a program that asks for the number of fat grams and calories in a food item. Validate the input as follows: - Make sure the number of fat ...

*October 15, 2014 by Bryson*

**Is My Pseudocode Correct? - Programming**

I am supposed to make a pseudocode for a fat gram calculator. These are the instructions: Design a program that asks for the number of fat grams and calories in a food item. Validate the input as follows: - Make sure the number of fat grams and calories are not less than 0 - ...

*October 15, 2014 by Bryson*

**Algebra**

One number is 6 more than another number and their sum is 2. How would i make that an equation thought. for example if the question was, Jane spent $42.00 for shoes. This was $14 less than twice what she spent for a blouse. How much was the blouse? the equation would be, 42= ...

*January 20, 2007 by Steve*

**math**

Can someone please show us how to show 1500 x 2.1? I can not for the life of me show my daughter how to come up with the correct answer she is just not getting what I am showing her.

*September 26, 2007 by Ree*

**math problem**

In a television game show, there are five questions to answer. Each questin is worth twie as much as the previous question. If the last question was worth $64000, what was the first question worth?

*August 8, 2009 by marcus*

**Physics**

Which of the following is correct for a step-down transformer? Number of turns in the primary coil is less than the number of turns in the secondary coil. Step-down transformer increases the voltage from low value to high value. Number of turns in the primary coil is more than...

*October 22, 2012 by Liam*

**Math**

Five times the larger of two numbers plus four times the smaller is 271. Three times the larger less twice the smaller is 57. find the numbers

*February 29, 2016 by Lisa*

**MAT-104 (Math)**

Listed below are five female and five male Wimbledon tennis champions, along with their country of citizenship and handedness. Female Male Stephi Graf, Germany, right Michael Stich, Germany, right Martina Navratilova, U.S., left Stefan Edberg, Sweden, right Chris Evert Lloyd, ...

*May 11, 2013 by Neal*

**Physics **

if the unit of power is the watt (W), and P = Fd/t, show using the result of question (2) and the fact that distance (d) uses units of meters and time has units of seconds. *** question 2. If m represents mass in kg, v represents speed in m/s, and r represents radius in m, ...

*September 12, 2011 by Allana*

**Physics**

if the unit of power is the watt (W), and P = Fd/t, show using the result of question (2) and the fact that distance (d) uses units of meters and time has units of seconds. *** question 2. If m represents mass in kg, v represents speed in m/s, and r represents radius in m, ...

*September 12, 2011 by Anthony*

**tough pH problem #2 possible solution**

Using the HH equation. pH = pKa + log (base/acid) . I chose pH of 7.45 because I want to minimize the amount of Hepes I have to use so making the pH higher will mean less HEPES would have had to be added originally.. plug in pH of 7.45 and pka of 7.55 and solve for the base/...

*October 9, 2006 by ajones51*

**Geometry (sorta)**

seven people meet and shake hands with eachother- how many handshakes occur? (second question) using inductive reasoning, write a formula for the number of handshakes if the number of people is n

*August 25, 2008 by Shay*

**Chemistry**

using the balanced reaction equation for the combustion of propane, determine the number ofmoles of oxygen that would react with.50 mol propane and the number of moles of carbon dioxide that would be produced?

*January 9, 2011 by Blake*

**Math **

A nickel is flipped and a dime is flipped. 1. What is the probability of obtaining exactly one head? A bag contains five balls numbered 0 through 4. Two balls are chosen at random in succession. The first ball is replaced before the second is chosen. 1. What is the probability...

*February 7, 2013 by Kyle*

**Interger confusion**

What explains how to model -5+ 3 on a number line? Is it start at zero tehn move left five times then right three times to end at -2 ?

*April 30, 2013 by Moby*

**math **

suppose you invest $525 for five years at an annual interest rate of 4.2%. What is your balance at the end of five years rounded to the nearest cent?

*December 15, 2009 by Jas*

**math/algebra**

three fourths = seven tenths = two thirds = eleven twentieths = five eights = twenty one twenty five =

*February 29, 2012 by fatima*

**English**

I need to write a speech that covers in detail five PowerPoint slides and is about five minutes long. Where do I start, and how do I organize the speech?

*April 29, 2015 by Anonymous*

**programming techniques**

how do modular program work, can you show me an example of it using dowhile pseudo code.

*July 11, 2008 by alberto*

**math (if someone could show me the working pls)**

calculate the difference of the square using the following formula a^2-b^2=(a+b) (a-b) 1)28^2-12^2

*August 20, 2009 by keisha*

**Maths**

There are 3 vectors: p= 7i + 10j q= 3i + 12j r= -i +4j Could you show me how to find the angle PQR. using the scalar product.

*March 14, 2011 by Anique*

**math**

solve the inequality, write answer using interval notation pleas show the work 50/x+4+1<4x

*November 11, 2011 by mz tee*

**calculus**

Show that the equation;x+3sinx=2 has a root between x=0.4 and x=0.6 using newton raphson's formular only

*November 16, 2011 by farouk*

**Trignometry**

How can I find the exact value of 4cos(7ð/4)-2sin(ð/3) without using a calculator (show work)?

*January 31, 2012 by Anonymous*

**Algebra**

Write using set builder notation.Show work....Solve..-2(10x-9)-17x<(6-x)

*March 16, 2012 by sherry*

**math**

Solve -3(x-10)>-x+5. Write your solution using set builder notation. please show work

*March 29, 2012 by Renee*

**Trigonometry**

Show algebraically how to confirm that cos2x=cos^2x-sin^2x using the sum and difference identities

*July 15, 2012 by Nikki*

**Algebra**

Solve using set builder notation, show all work. 12x-25 is greater than or = to 3x-5(x+6)

*July 28, 2012 by Ellen*

**math**

how many two digit numbers can be made using only these digits 2,4,6,8 show work and explain

*September 6, 2012 by Anonymous*

**sociology**

using feminism, show how Facebook has made an impact on today's technologically-advanced society.

*July 11, 2013 by rita*

**Calculus**

y = g(x) = cos(x) Can someone show how to estimate g'(pi/2) using the limit definition of the derivative and different values of h. Thanks!

*July 12, 2015 by Henry*

**cal**

Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.

*July 26, 2015 by Jonathan*

**Calculus**

Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.

*July 26, 2015 by Jonathan*

**Math**

Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.

*July 26, 2015 by Jonathan*

**Math**

A does 20% less work than B .If a complete a piece of work in 7& 1/2 hours then B can do it in options- 5,5&1/2,6,6&1/2 plz solve without using x and y method

*April 27, 2011 by Apoorv*

**math**

How many different 3 digit numbers less than 500 can be made using the digits 3, 4, 5, and 6 if the digits can be used only once

*November 17, 2011 by Anonymous*

**math**

how would you convert the repating nonterminating decimal to a fraction? explain the process as you solve the problem/0.1515... remember to show all of the steps that you use to solve the problem how would you convince a fellow student that the number 0.57 is a rational number?

*October 25, 2014 by kthy*

**algebra**

What are the steps of the order of operations? Why is it important that you follow steps rather than solve the problem from left to right? Write an expression for your classmates to simplify using a least three of the following.

*November 23, 2008 by Anonymous*

**math**

using exactly four 4s and only addition, subtraction, multiplication, and division, write an expression that equals each of the numbers from 1 to 10. you do not have to use all the operations, and numbers such as 44 are permitted

*July 7, 2012 by leo*

**Calculus**

The number of people expected to have a disease in t years is given by y(t) = A.3^(t/a) (i) If now (year 2016) the number of people having the disease is 1000, find the value of A. (ii) How many people are expected to have the disease in five years? (iii) When are 100,000 ...

*November 11, 2016 by Muhammad*

**Calculus**

The number of people expected to have a disease in t years is given by y(t)=A•3^(t/4) i) if now year(2016) the number of people having disease is 1000, find the value of A? ii) how many people expected to have the disease in five years? iii) when are 100,000 people expected ...

*November 23, 2016 by Shah*

**Calculus**

The number of people expected to have a disease in t years is given by y(t) = A.3^(t/a) (i) If now (year 2016) the number of people having the disease is 1000, find the value of A. (ii) How many people are expected to have the disease in five years? (iii) When are 100,000 ...

*November 29, 2016 by Muhammad*

**Math Terminology**

Identify all the components of this statement: 3a + 2b = 7 Is this an equation or an expression and why? constant variable term expression equation I believe it is an equation because it has an equal sign I believe the constant is 7 because that never changes I'm not sure ...

*January 16, 2016 by Marina*

**Pre-Calculus**

I'm having trouble with this question. The number of horse-power H required to overcome wind drag on a certain automobile is approximated by: H(x)= 0.002(x)^2 + 0.005(x) - 0.029, [10 is less then/equal to (x) is less then/equal to 100]. Where x is the speed of the car in miles...

*February 8, 2011 by Sam*

**Math**

A clothing store sold 5 T-shirts for $11 each and 5 sweatshirts for $19 each. The expression below represents the total amount, in dollars, the store received. 5 (11 + 19) Which expression is equal to the total amount, in dollars, the store received? A 5 + 11 + 5 + 19 B 5 x 11...

*December 8, 2015 by Raiven*

**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 by Anthony*

**Art**

Could you please check these sentences, too? Thank you. 1) Unlike in the past, now people enjoy watching ads. Their objective is to show people how to defend.. They aim to show people how to defend.... (are they both possible?) 2) The use of children in ads is an exploitation ...

*May 24, 2012 by Franz*

**Algebra II**

9x+y is less than or equal to 1700 9x+3y is less than or equal to 1800 4x+8y is less than or equal to 2400 ***I need help plugging in numbers for x and y. The numbers don't have to be the same for each question.

*September 13, 2012 by Emily*

**Math**

I am stuck on trying to figure out how to do this question. Could someone please show me 5 necessary steps ? Thank you. Here is how the assignment question is worded. Select any two integers between -12 and +12 which will become solutions to a system of two equations. Write ...

*February 9, 2011 by Tiffany*

**Math Binomial theorem**

I'm preparing for a test and one of the questions in my text is as follows: In a trivia contest,Sam has drawn a topic he knows nothing about, so he makes random guesses for the 10 T/F questions. Use the binomial theorem to help find a)the number of ways Sam can answer the test...

*April 17, 2011 by ann*

**7th grade math worksheet **

Need help on how to actually do the rise/run and equations to figure out the anxwer to "What do you call a duck that steals?" worksheet. I can find the answer on your websight, but I need to show my work for numbers 1-6 using rise/run and numbers 7-18 using the equation. Help...

*February 17, 2011 by Adam*

**math**

a local television station sends out questionnaires to determine if viewers would rather see a documentary, an interview show or reruns of a game show there were 350 responses with following results. 105 were interested in an interview show and a documentary but not reruns.14 ...

*April 27, 2011 by jim*

**Geometry **

Which statement is true for the expression 6a + 15b − 4a − 8c? Answer A. It can be written as 6a + 15b − 8c − 4a by using addition property of equality. B. It can be written as 6a − 4a + 15b − 8c by using distributive property of addition. C...

*February 26, 2012 by Anonymous*

**math**

The question is a principal is choosing between field trips. The final cost is $600. The second costs $240 plus $40 per student. For what number of students is the first trip less expensive. I got the 1st trip would be less expensive with more than 9 students. Is this correct...

*December 30, 2012 by B6*

**Calculus 1**

Let f be the function given by f(x)=3sqrt(x-2). A) On the axes provided sketch graph of f and shade the region R enclosed by the graph f, the x-axis, and the vertical line x=8 (already completed just mentioned it for part B.) B) Find area of the region R described in part (A...

*April 28, 2011 by Michael*

**physics**

Will tosses a ball straight upward. Show that if the ball is tossed upward at 18m/s it will be in the air for less than 4s.

*February 12, 2011 by Daisha*

**Calculus**

A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you have to find the prime ...

*November 29, 2010 by Leanna*

**Calculus**

A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you have to find the prime ...

*November 29, 2010 by Leanna*

**Calculus!!!!**

A particle moves along the x-axis with position at time t given by x(t)=e^(-t)sin(t) for 0 is less than or equal to t which is less than or equal to 2 pi. a) Find the time t at which the particle is farthest to the left. Justify your answer I think you have to find the prime ...

*November 29, 2010 by Leanna*

**Statistics **

From a recent statistical analysis for the last five years, on an average there are 4 (major) air accidents per month in the world. Let X be the number of air accidents occurred in a randomly selected month. It is known that X ~ Poisson() approximately, where the ...

*November 5, 2012 by Desire Glenn*

**math**

King Arthur II has problems with pronouncing the digit 3. People are afraid of presenting something which includes 3 in it. The solution found is that if any number includes 3 as a digit, the number is divided by 2. This process continues as far as the new numbers include new ...

*April 26, 2015 by ani*

**Math**

1. Cystic fibrosis (CF), a life-threatening lung disease, is caused from the inheritance of a recessive allele from both parents for the CFTR gene. In order for this disease to manifest itself, one needs to be homozygous recessive for this autosomal gene. According to the ...

*October 25, 2015 by Bella*

**Math URGENT HELP**

Find the next three terms in the sequen 1. 30, 22, 14, 6... -3, -12, -21**** -1, -8, -15 -1, -2, 3 -2, -10, -18 4. Find the first four terms of the sequence represented by the expression. 4. 3n+5 5,8,11,14 8,11,14,17 3,6,9,12 0,8,11,14 (idk about this one)^^^^^^^^^ Find the ...

*March 9, 2016 by Aaliyah*

**Math**

i am a 4 digit number between 3000 and 4000.My ones digit is twice my thousands digit.My hundreds digit is the same as my ones digit and my tens digit is one less than the hundreds digit.If the sum of my digit is twenty,what number am i?

*June 5, 2012 by Anne*

**Statistics**

5. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1...

*January 26, 2011 by Tab*

**Statistics**

6. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1...

*January 26, 2011 by Tab*

**Physics**

A dragster starts from rest and accelerates down the track. Each tire has a radius of 0.360 m and rolls without slipping. At a distance of 360 m, the angular speed of the wheels is 292 rad/s. -------------------------------------------------------------------------------- (d) ...

*April 5, 2008 by Oliver*

**civics**

The Federal Reserve has a number of ways to influence the supply of money. The Federal Reserve can influence the interest rate that people pay on their loans, regardless of what bank they are using. How might the Fed adjust the interest rate if it wanted to increase the amount...

*June 1, 2015 by Nani*

**Maths-Algebra**

In class i was given this- Write Each of these Phrases using Mathematical Symbols: a)15 More than x = b)x Divided By 4 = c)x Times 12 = d)3 Less than twice x = And i Don't understand What to Do!?!?! Anyone Could Help that would Be really Great.

*May 21, 2008 by Madison*

**maths**

Please help me on these problem solving sums. Also show the rough work and answer. First question: If 15% of the children walk to school, 7% cycle to school and 30% come by bus, what percentage come by car ? 2. How much for forty steel nails at €2.50 per 100 ? 3. What is the...

*November 10, 2015 by liam*

**Math**

Records show that 29% of all payments to a mail-order company are submitted after the due date. Suppose 50 payments are submitted this week. Let r be a random variable that represents the number of payments that are late. Use the normal approximation to the binomial to ...

*August 7, 2011 by Justina*

**Math - Maxima and Minima**

The height, h, in metres, of a ski ramp over a horizonatal distance, x, in metres, is given by h(x)=0.01x^3-0.3x^2+60 for the interval 0 less than or equal to x less than or equal to 22. a) Find the vertical drop from the top of the ramp to the lowest point on the ramp. b) ...

*October 23, 2010 by Anonymous*

**math**

Suppose that a vegetable vendor pays 7% interest daily on a $10 loan. Then, suppose that this individual was able to save $0.50 per day by drinking less tea. Calculate the number of days it would take for the vendor to no longer need to borrow money in order to purchase $10 of...

*April 20, 2013 by lida*

**eco, **

Suppose that a vegetable vendor pays 7% interest daily on a $10 loan. Then, suppose that this individual was able to save $0.50 per day by drinking less tea. Calculate the number of days it would take for the vendor to no longer need to borrow money in order to purchase $10 of...

*April 21, 2013 by kiril*

**economics**

Suppose that a vegetable vendor pays 7% interest daily on a $10 loan. Then, suppose that this individual was able to save $0.50 per day by drinking less tea. Calculate the number of days it would take for the vendor to no longer need to borrow money in order to purchase $10 of...

*April 26, 2013 by cevin*

**Math...**

what do they mean? Write an inequality to show "a number,b, is positive" ?

*October 2, 2007 by Mathilde*

**math**

how does algebra help you show pattern or black hole number?

*January 17, 2011 by cliford*

**math**

Draw q number line to show these fraction are equivalent 3/4=6/8 and 1/4=2/8

*February 4, 2013 by Anonymous*

**math**

how you can use a number line to show that 3/6 and 1/2 are equivalent fractions

*May 20, 2014 by maria*

**math**

draw a number line to show that the fractions are equivalent 3/4=6/8 and 1/4=2/8

*May 20, 2014 by maria*

**Math**

Draw two number lines that show 0.20 and 1/5 are equivalent

*October 6, 2015 by Anna*

**Math**

Please explain to me how to solve this problem: Reid and Maria both play soccer. This season, Reid scored 4 less than twice the number of goals that Maria scored. The difference in the number of goals they scored was 6. How many goals did each of them score?

*December 26, 2011 by Jane*

**Probability **

A nickel is flipped and a dime is flipped. 1. What is the probability of obtaining exactly one head? A bag contains five balls numbered 0 through 4. Two balls are chosen at random in succession. The first ball is replaced before the second is chosen. 1. What is the probability...

*February 7, 2013 by Kyle*

**Math**

Alicia's weekly allowance is $10 and Manchiny's weekly allowance is $8. Every week they each spend $3 on lunch. Write a numerical expression to show how many weeks it will take them together to save enough money to buy a video game for $60.

*November 3, 2016 by Tomeisha*

**Calculus**

The formula for the amount (A) in a savings account compounded n times per year for t years at an annual interest rate r, with initial deposit P, is given by A=P(1+r/n)^nt. Evaluate this formula as the number of compoundings per year becomes infinite. (the number "e" should ...

*October 27, 2015 by Nick*

**mathematics**

1. you toss three coins. what is the probability P that all are heads? 2. write and simplify an expression for the perimeter of a triangle with these lengths: 1/2x, x, 5/4x for number one, i think it might be 1/8 i'm not sure.. please help!!

*September 8, 2009 by joy*

**Pre-Calc Help!!!**

Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. Sqrt(1-cos50/2)

*April 16, 2012 by Amanda*

**pre-calc helpppp**

Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. ã((1-cos50)/2)

*April 21, 2012 by John*

**Economics**

One year ago, you bought a bond for $10,000. You received interest of $400 at the end of the year, as well as your $10,000 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work

*October 19, 2010 by Tracey*

**Finance**

One year ago, you bought a bond for $10,000. You received interest of $400 at the end of the year, as well as your $10,000 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work.

*April 28, 2011 by ky*

**Economics**

One year ago, you bought a bond for $10,000.00. You received interest of $400.00 at the end of the year, as well as your $10,000.00 principal. If the inflation rate over the last year was five percent, calculate the real return. Show your work.

*January 28, 2012 by Tracey*

**math**

you spin two spinners, each of which is divided into five congruent sections numbered 1 to 5. list all possible outcomes. then find the probability of getting the same number on both spins

*February 2, 2016 by cesar*

**college- practical statistics**

Five coins are tossed 3200 times find the frequencies of distribution of heads & tails & tabulate the results. Calculate the mean number of success & the standard deviation.

*September 19, 2016 by sathya*

**Need help World Geography**

1. With respect to global connections, association with _______ offers the brightest immediate future for many African countries. A. India B. the European Union. C. China D. the United States. 2. Slum areas called shantytowns occur in _________ major African cities, housing ...

*January 4, 2014 by sue*

**Math(Factoring)**

x^2+4 x^2+4 = (x + 2 i) (x - 2 i) Wouldn't you need a value for x? Or do u just have to make an expression? An expression for this example would be xx+4 O never mind my answer was incorrect. Sorry about that.

*June 29, 2007 by Erica*

**CALCULUS**

The expression dy/dx = x(cbrt(y)) gives the slope at any point on the graph of the function f(x) where f(2) = 8. B. Write an expression for f(x) in terms of x. I can't figure out what to do with that cubed root; it keeps throwing me off.

*May 30, 2012 by ANONYMOUS*