Saturday

March 28, 2015

March 28, 2015

Number of results: 69,544

**Precalculus**

A lattice point is a point with integer coordinates. How many lattice points (x,y) with -100 less than or equal to x less than or equal to 100 and -100 less than or equal to y less than or equal to 100 are on the graph of the parametric equations x=30-40 cos t y=-50 + 30 cos t ?
*February 28, 2014 by John*

**Precalculus**

A lattice point is a point with integer coordinates. How many lattice points (x,y) with -100 less than or equal to x less than or equal to 100 and -100 less than or equal to y less than or equal to 100 are on the graph of the parametric equations x=30-40 cos t and y=-50 + 30 ...
*March 2, 2014 by John*

**Rob**

1) A White eye (w) female Drosophila is crossed with diminutive (dm) males. The F1 wild type females are then crossed to the double mutant, white eye, diminutive males and produce the following: white eye, normal size 487 normal eye, diminutive 475 normal eye, normal size 19 ...
*September 20, 2011 by Genetics*

**Genetics**

1) A White eye (w) female Drosophila is crossed with diminutive (dm) males. The F1 wild type females are then crossed to the double mutant, white eye, diminutive males and produce the following: white eye, normal size 487 normal eye, diminutive 475 normal eye, normal size 19 ...
*September 20, 2011 by Rob*

**Math**

Harmony just negotiated a new deal with Purple Parrot Records. She will be paid a monthly base salary of $3900 plus a commission of $5 per CD sold. Melody is trying to decide if this is a better deal than her monthly base salary of $4250 plus a commission of $2 per CD sold/ 21...
*December 2, 2013 by Jerald*

**Math- Completely confused! **

Simplify each expression (where possible) and write the answer without using negative or fractional exponents. Assume that X>0. a. 8x^(1/3) b. (-8x)^(1/3) c. (8x)^(-1/3) d. (3x^(3/4))(16x)^(1/4) e. (x^(1/2)) / (x^(5/2) so far my answers are : a.2x b. -2x c.1/2x but i feel ...
*August 21, 2010 by Jackie*

**English**

1. Go straight to First Street. 1-1. Go straight to the First Street. (Do we have to use 'the' or not?) 2. It's just next to the hospital. 2-1. It's only next to the hospital. (Are both the same expressions?) 3. I'll go to the railroad station. 3-1. I'll go to the reailway ...
*October 21, 2008 by John*

**math**

Write the answer to the problem as an algebraic expression. The product of two numbers is 30. One of the numbers is r. What is the other number? Our choices are: a) r/30 b) 30/r c) 30-r d) 30r I believe the answer is b but am thinking it may be c, any help?
*January 20, 2011 by m*

**math**

6a^2+4a+5+3a^2+7a-2 That is the same thing as 9a^2+11a+3, but what is the question? You have just written an algebraic expression, not an equation to be solved. assuming you are required to factorise the equation and the expression give by drwls it factorises to (9a+3)(a+1) ...
*January 26, 2007 by chucke*

**English**

Thank you very much for your last corrections. Can you check these sentences, too? Thank you very much in advance. 1)Th urban population was affected by serious diseases such as smallpox nd typhus. 2)The majority of children died before the age of five (before they reached the...
*April 4, 2010 by Franco*

**Chemistry**

Use the periodic table and predict the number of electrons that will be lost or gained by the following elements as they change into simple ions. Write an equation using elemental symbols, ionic symbols, and electrons to represent each change. a) Ca b) Aluminum c) Fluorine d) ...
*February 6, 2014 by Ellenjoy*

**Math**

solve the system of linear equations using the addition method. Can you please show me the steps on how you reached the answer. Thank You 2x+20y= -144 12x+5y= 56
*May 11, 2010 by Heather*

**CALCULUS**

find f'(x) for f(x) = x/(sqrtx^2+1) please show all the steps. I'm realy confused on this one. I get as far as setting it up using the quotient rule then I go blank. thanks
*March 16, 2011 by redgy*

**physics**

using a sketchs, show the type of directions of forces acting on the following farm hand tools i) a hoe ii) a rake for land clearing 0
*January 27, 2012 by callister*

**Calculus**

Find the instantaneous rate of change of V with respect to r when r=100 V(r)=.2r^2-20r+600 using limit definition. Please show work for understanding, thank you :)
*February 14, 2013 by Tori*

**Math/probability**

Five different written driving tests are administered by the Motor Vehicle Department. One of these five tests is selected at random for each applicant for a driver's license. A group consisting of two women and three men apply for a license. (a) What is the probability that ...
*November 19, 2011 by Lorena*

**Math**

1-)A passenger boat which travels 6 mph faster than a freighter required 3 days less time to make a trip of 2592 miles. Find the rate of the passenger boat. 2-)For the first of two basketball games the price of each reserved seat was $1.50,the price of each unreserved seat was...
*May 8, 2014 by Lina*

**Math**

Which is the expression that can be factored using the greatest common factor for this equation? 6p^3-12p^2+9p A. 3(2p^3-4p^2+3p) B. 3p(2p^2-4p+3) c. 3p^2(2p^2-4p+3) D. 6p(p^2-2p+9) I believe it is B because only A and B work but B is the greatest common factor. Is this ...
*March 29, 2013 by B6*

**algebra worD PROBLEM**

1) For a walkathon a sponsor commmited to give you a flat ffe of $5 plus $2 for every mile you walk. Write an expression for the total amount you will collect from your sponsor at the enf of the walkathon. Then evaluate your =expression for 20 miles walked. I goet ; $2m + $5...
*October 24, 2011 by marko*

**word problem help algebra**

1) For a walkathon a sponsor commmited to give you a flat ffe of $5 plus $2 for every mile you walk. Write an expression for the total amount you will collect from your sponsor at the enf of the walkathon. Then evaluate your =expression for 20 miles walked. I goet ; $2m + $5...
*October 24, 2011 by marko*

**math**

Equivalent Expressions 1. Which algebraic expression is equivalent to the expression below? 3(x - 2) + 12(x + 8)
*February 7, 2011 by Max*

**maths**

given tht g(x)=2x+1/5 and f(x)=x+4 write an expression for gf(x) write an expression for me plz
*January 26, 2014 by krissy*

**Maths **

How do I write an equivalent expression to the expression below (17x 93) / (17x 97)
*April 27, 2014 by Pinks*

**MATH**

Write probability as fraction 1. Sam flips two coins. Find probability of 1 head and 1 tail. I think 2/4 or 1/2 2. You roll 1 number cube to show an odd number. I think 3/6 or 1/2 3. Sheila has 8 apples; 5 of them are red. I think 5/8 4. Of 12 books, 3 are fiction I think 3/12...
*March 13, 2014 by Anonymous*

**Algebra**

You are a contestant on a game show and have the chance to win a car by rolling 5 dice. Each die has three sides that say CAR and three sides that are blank. In order for you to win the car you CAR on all five dice. You have three chanat ces to roll the dice. On each roll you ...
*May 1, 2012 by Dena*

**calculus**

write the expression in the form bi, where b is the real number squareroot-16 squareroot-25 squareroot-3 squareroot-5
*October 29, 2009 by tommy*

**English**

1. He found the article at the lost and found office. 2. He found the article at the Lost and Found Office. (Which expression is correct?) 3. 2+5 =7 Two plus five is seven. 4. 3X6=18 Three multiplied by six eqals eighteen. 5. 10-8=2 Ten subtracted from eight leaves two. 6. 36...
*June 13, 2009 by John*

**Trigonometry **

For 0<x<pi/2, sin x and cos x are both less than 1 and greater than 0 (easy to see). We are also given that sin^2x+cos^2x=1. Use this to show that sin^7x+cos^7x<1 for 0<x<pi/2. Unsure on how to proceed?
*October 27, 2013 by Sam*

**Algebra**

Greta invests $10,000 in an investment that pays 3% interest, compounded annually, for the first three years, then 9% interest, compounded annually, for the last three years. Rui invests $10,000 in an investment that pays r% for all six years. The two investments are worth the...
*April 2, 2009 by Cassie*

**Math**

Evaluate the expression without using a calculator: log4(2)= ____? Use a calculator to find the logarithm accurate to four decimal places: log4(27)= ____?
*February 14, 2010 by jh*

**ALgebra**

distance and time. A car is traveling 60 miles per hour, . Give the time take the car to travel 360 M miles.by using a rational expression
*September 3, 2011 by Josie Wilson*

**algebra**

Form a polynomial f(x) with real coefficents having the given degree and zeros Degree 5; Zeros: 2; -i;-7+i Enter the polynomial f(x)=a(____) type expression using x as the variable
*June 8, 2013 by Sharday*

**Math**

Jim is paid overtime when he works more than 40 hours of per week. Write an expression for the number of hours he works overtime when he works h hours. Find the number of hours Jim works overtime when he works 40, 44, 48, and 52 hours
*September 6, 2012 by Joe*

**math**

What is the least number of place-value blocks you need to show 4,200? The greatest? well, here is what the blocks are: 4 2 0 0 thousand hundreds tens ones does this help at all? I'm actually trying to figure this out so I can help my daughter. I understand that part of it, ...
*September 28, 2006 by melissa*

**8th grade Math**

Khalid uses Penelope’s bag of letter tiles to create a different game in which he tries to randomly draw a set of five tiles with consecutive letters. If Khalid plans to draw five tiles from the bag, without looking and without replacing any tiles, what is the probability that...
*February 1, 2011 by Anonymous*

**Math/spanish**

how do you translate the number 501,289 into the spanish written form? (five hundred one thousand two hundred eighty nine)in spanish?
*September 10, 2007 by Meredith*

**Simple Math**

Two eight-sided number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is six?
*January 31, 2013 by Jessica*

**stats-please help**

MEAN=10 & STD DEVIATION=2. FIND THE PROBABILITIES: 9.4 less than X less than 10.6? i have 2 different answers but am checking the answer. thank you
*March 8, 2011 by jean *

**Precalculus**

Solve cos(x) = -0.44 on 0 (less than or equal to) x (less than) 2pi There are two solutions, A and B, with A < B Give your answers accurate to 3 decimal places
*April 7, 2013 by marie darling*

**precalculus**

Solve sin(x) = 0.64 on 0 less than or equal to x less than 2pi There are two solutions, A and B, with A < B Give your answers accurate to 3 decimal places
*April 7, 2013 by anonymous*

**Chemistry**

How many significant figures in total do you have to use when using the electronic balance that has accuracy up to three figures after the decimal point that you used in the lab, to weigh a sample that is less than 10 grams.
*September 9, 2007 by Heather*

**Math**

Solve the inequality by first rewriting it as an equivalent inequality without absolute value bars. Express solution set using interval notation. | x+3 | +8 is less than or equal to 14 Thanks so much for helping me!
*February 1, 2012 by Chelsea*

**statistics**

Using the average and standard devation for length variable from problem 3,find the probability that the length of 35 movies is less than 120 minutes. Assume the distribution is normally distributed. interpret your result.
*February 27, 2013 by kat*

**algebra 2**

PLEASE HELP wiTH ALL OF THEse. I DONT KNOW WHERE TO START---THANKS! 1. At 2pm the number of bacteria in a colony was 100, by 4pm it was 4000. Write an exponential function to model the population y of bacteria x hours after 2pm. 2.Using the information in problem 1, how many ...
*February 24, 2008 by cal*

**maths**

using the mean valiue thereom on f(x)=arcsin(x), show that x< arcsin(x)< x/(sqrt1-(x^2)) for 0<x<1
*December 9, 2009 by nikki*

**algebra**

solve using elimination please show how to come up with answer. 6x - 3y = 18 6x + 3y = -12 Please help!!!
*August 21, 2014 by michael R*

**Algebra 1 please help**

There are 15 violinists in the orchestra this year. Next year, two violinists will leave and some new violinists will join the orchestra. If v is the number of violinists who will join the orchestra, write an expression to represent the number of violinists in the orchestra ...
*January 14, 2015 by Steph*

**mtah problem**

the girls gym teacher needs to purchase 15 softballs, 5 package of tennis balls and two soccer balls.she plans to collect $1 from each of her students to help pay for balls.write and evaluate an expression to show how much more the teacher will have to pay.
*January 13, 2009 by morgan*

**MATH**

Can anyone please help me with this? Can anyone please build or generate at least five Pythagorean Triples using one of the many formulas available online. Then After building the triples, verify each of them in the Pythagorean Theorem equation. Thank you so very much.
*August 19, 2011 by John*

**To Helper**

I had a problem to solve, and I dont get how to make equations from this problem. Mrs. Chans math class contributed 2 dollars and $1 coins to an earthquake relief fund. the number of $1 coins contributed was 8 less than 5 times the number of $2 coins contributed. if class ...
*January 13, 2011 by Mathew*

**Chemistry**

Can you draw a dipeptide and show all the functional groups, atoms, and bonds, any full charges on atoms, and the "R" group. Also, show N and C terminus? It would really help if you can show me pictorially.. thanks
*October 11, 2011 by Sam*

**Math/Calculus**

Please check my work and correct any errors/point out any errors. Thanks. Solve the initial-value problem using the method of undetermined coefficients. y''-4y=e^xcos(x), y(0)=1, y'(0)=2 r^2-4=0, r1=2, r2=-2 yc(x)=c1*e^2x+c2*e^-2x yp(x)=e^x[Acos(x)+Bsin(x)] y'p(x)=e^x[-Asin(x...
*July 12, 2007 by COFFEE*

**Visual Basic (Computer Programming)**

ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week. Desk-check your ...
*January 16, 2013 by Erick*

**algebra 1**

a high school wrestling mat must be square with 38-foot sides and contain two circles as shown. suppose the inner circle has a radius of "s" feet and the outer circle's radius is nine feet longer than the inner circle. *write an expression for the area of the larger circle. * ...
*March 5, 2008 by trixie*

**Science (Chemistry)**

2. Perform this operation and report the answer to the correct number of significant figures: What is the mass of a cube of aluminum that is 4.0 cm on each edge? The density of aluminum is 2.7 g/cm^3. Show all calculations leading to an answer. (I think I solved this correctly...
*March 9, 2015 by Grace*

**Pre-Calculus**

A local photocopying store advertises as follows. " We charge 14 cents per copy for 150 copies or less, 6 cents per copy for each copy over 150 but less than 230, and 3 cents per copy for each copy 230 and above. " Let x be the number of copies ordered and C(x) be the cost of ...
*September 30, 2013 by Ann*

**math**

I need an expression written for the following logs using "sum, difference, or multiple of logarithms." a) log[base(2)] ((x^2) - 9)/(x^3))^3 b) log[base(a)]5a^4 Hopefully they are clearly written. thanks. -roberto
*April 8, 2013 by Roberto*

**science**

4.which of the following describes the use of a renewable form of energy? (1 point). a. using natural gas to heat a house b. using a windmill to grind grain c. using petroleum to run a car d. using coal to generate electricity
*February 11, 2014 by bla*

**math**

Jackson has 14 pet birds and rabbits. The total number of rabbits have 44 more legs less than the total number of birds. How many pet birds does he have?
*October 17, 2013 by Jada *

**Calculus Help Please!!! **

if f(x)= x+(1/x), find f'(x) using the limit definition of derivative. Please show steps!!! Thank you!!!
*February 25, 2014 by Tenshi *

**algebra**

i have no less than 6,000 to spend and no more than 10,000 write an inequality to show how much I have to spend
*February 13, 2010 by charlyn*

**Math**

simplify the following expression and show your problem solving strategy x cubed + x squared + x + 1 + 2(x cubed + x squared + x + 1) + 3(x cubed + x squared + x + 1) + ....100( x cubed + x squared + x + 1)
*November 5, 2008 by Rose*

**Math**

To determine if 3417 is prime, you would have to try dividing 3417 by every whole number less than 3416. True or false and how did you get the answer
*December 4, 2007 by Beth*

**11th grade Algebra 2**

Marciella has a bag that contains 35 nickels and quarters. The total value of these coins is less than $2.50. What is the maximum number of quarters that meets these conditions?
*April 7, 2010 by David Nipp*

**6th grade**

I am an improper fraction that is more than two and one third and less thatn two and three fourths. The sum of my numerator and denominator is 29. What number am I?
*November 22, 2010 by jonothan*

**5th grade Math**

Clue1: i am greater than 500 but less than 1,000. Clue2: My square root is a square number. Also please explain your answer. Thank you.
*September 13, 2011 by Alexia*

**MATH**

a box contains 20 slips of papers, numbered 1-20. A slip of paper is drawn from the box and the number is noted. Find the probability that it is a positive integer less than 21.
*October 3, 2011 by Katie*

**finite math**

suppose that 3 digits are selected at random from the set S={1,2,3,4,5,6} and are arranged in random order. Find the probability that the resulting 3-digit number is less than 300.
*September 4, 2012 by allen*

**English**

Question: Do you have the star Show (TV) program in the USA? What kinds of people show up in the star Show?
*June 21, 2014 by rfvv*

**Math**

Could you show me how to work through this problem? Show me steps Solve for s. Show all steps. –3s ≥ 18
*October 25, 2014 by mstv*

**algebra1**

an internet serive provider charges $9.95/month for the first 20 hours and $0.50 for each additonal hour. write and expression presenting the charges for h hours of use in one month h is more than 20 hours. what is the charge for 35 hours... pls show me the formula to work ...
*August 26, 2010 by alanaR.*

**Public Finance**

A corporation has $7 mil. in equity. During the tax year it takes in $4 million in receipts and earns $ 2 million in capital gains from sale of subsidiary. It incurs labor costs of $1 million, interest costs of $250,000, material costs of $500,000, and pays rent for structure ...
*January 29, 2011 by Mel*

**math**

can anyone help me with these 3 problems I am trying to check my daughters hoime work it has bee na few years. 1. The sum of n and twenty -two, multiplied by three, is 78 2. the product of z and 17 is less than or equal to the difference of twenty -one minus z. 3.two increased...
*September 15, 2006 by liz*

**10th grade**

This week, from Sunday until Thursday, the school drama team sold adult and student tickets to their play. The person in charge of selling the tickets kept a record of the number of adult and student tickets sold on each day. However, she forgot which day the tickets were ...
*September 30, 2010 by rashmi*

**Math Graphing**

Graph this: y greater than or equal to 2x-3 2x-2y is less than or equal to 1 2x-2y is less than or equal to 1 2x is less than or equal 2y x is less than or equal y how do u graph this? how to graph x is less than or equal to y?
*June 1, 2010 by Skye*

**algebra 1**

please explain to me how I work out problems such as "-2-3" to get the correct answer and show the same on a number line
*August 26, 2010 by joe*

**Math**

Writing to Explain: How can you use models to show and name the number 1,400in two different ways? Expalin.
*September 21, 2010 by Amanda*

**chemistry**

Please show me how to calculate the number of moles in 8.45 x10 to 21st power formula units of calcium chloride?
*January 30, 2011 by Bev*

**Geometry**

Find one counterexample to show that each conjecture is false. The sum of two numbers is greater than either number.
*August 7, 2011 by Catelin*

**math**

write an equation to show the relationship between the score received and the number of questions the students answers correctly
*August 25, 2011 by zach*

**college algebra**

Solve the following equation in the real number system. Please show all of your work. 2x^3-3x^2-14x+15=0
*October 29, 2011 by julez*

**pre calculus**

solve the following equation in the complex number system Please show all your work. 5x^5 + 32x^4 - 5x - 32 = 0
*December 21, 2011 by Michelle*

**Chemistry**

How many atoms are present in a sample of 2.0 x 10^23 molecules of C7H5(NO2)3? Do you use Avogadro's Number? And please show work.. :)
*January 6, 2012 by Sunny*

**college algebra**

Solve the following equation in the complex number system. Please show all of your work. 2x^5-3x^4-32x+48=0
*January 18, 2012 by Jo *

**algebra**

i have to write a number in the block to make this true how do i get the answer for 70-30=40- please show me a example so i can complete my work
*May 22, 2012 by avonia*

**Math**

Thank you Steve for your help! I need help on another question. I have to show 10/8 divided by 5/8 on a number line. I don't know how to set this up. I am lost!!! Please help to explain this. Thank you
*October 30, 2012 by Cherie*

**Math**

in the problem 15 + 37=52, show how to make ONE addend the next tens number. Complete the new addition sentence __+__=__????
*October 9, 2013 by Julie*

**Science**

Plants=storing water Bacteria and fungi=decomposing dead organisma Earthworms=making soil less compact Bees=pollinating flowering plants Nearly all organisms=cycling oxygen and carbon dioxide Accoring to the chart,what would most likely happen in an ecosystem if there were a ...
*February 13, 2012 by Colton*

**Math**

You are making ballon bunches to attach to tables for a charity event. You plan on using 8 ballons in each bunch. Write a rule for the total number of balloons used as a function of the number of bunches created. Identify the independent and dependent variables. How many ...
*August 9, 2011 by Nick*

**Algebra 2**

Make a table with a process column to represent each pattern. Write an expression for the number of tiles in the nth figure. The picture is a column of squares that is 4X6. In each figure its subtracting a square.
*August 18, 2010 by Abby*

**math **

Clara's pay from her paper route is based on the expression $15 + $0.10p, where p is the number of papers she delivers during the wiik. What would her weekly pay be if she deliver 315 papers each week?
*January 25, 2012 by peter*

**Internetworking Design**

OSPF lab. Using a simulator I need to create a four router topology. Using any interfaces of my choice. I am given /24 networks – choose interface addresses from the given network ID. Configure all routers in OSPF area 0 and make sure you can ping from end-to-end. Use the ...
*February 23, 2008 by Amy*

**finite Math**

how do I set up this problem, purchase a car today with inflation rate of 4% per year compounding annually for the next five years what would the cost of a $17,000 car be five years later
*June 20, 2014 by Cindy*

**chemistry**

consider the following changes at constant temperature & pressure H2O(s) --yields-- H20(l); Delta H1 H2O(l) --yields-- H2O(g); Delta H2 H2O(g) --yields-- H2O(s); Delta H3 Using Hess's law, the sum of the deltas is a. equal to 0 b. sometimes greater than zero, sometimes less ...
*November 14, 2012 by marcus *

**Math**

In addition to the clues, he says that there is a five in the tens place,a seven in the ten-millions place, and a 3 in the hundred-thousands place. What number would fit with both sets of clues
*November 20, 2012 by yalianne sierra*

**algebra 1...urgent**

a high school wrestling mat must be square with 38-foot sides and contain two circles as shown. suppose the inner circle has a radius of "s" feet and the outer circle's radius is nine feet longer than the inner circle. *write an expression for the area of the larger circle. * ...
*March 5, 2008 by trixie*

**physics**

Sound travels at 343 m/s in the air. What distance from the student is the lightning strike, in meters? Write an expression that describes the skydiver's average speed, v1 during the period before opening the chute in terms of the given quantities. Expression. v1 = ...
*September 11, 2014 by joe 22*

**math**

Suppose your teacher tells you to write a word problem using the number 3. Which would be the best object to use in your problem? Explain. Then write and solve a word problem using that object. (tricycle, bike, wagon)
*September 24, 2014 by Bryce*

**math - equivalent expression**

This is just a quick question. I need to use the distributive property to write an equivalent variable expression. the problem is 8(x+6). would 14/x be a valid answer? and also if possible, could someone explain how this works?
*October 6, 2009 by john*

**math**

The least common multiple of two numbers Is 60 , and one of the numbers is 7 less than The other number. What are the numbers
*September 4, 2014 by Anna*

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