Thursday

January 29, 2015

January 29, 2015

Number of results: 67,947

**reading and math**

why do kids have to read math and reading thare should be less homwork less reading and less math
*October 25, 2012 by teddy dunc*

**algebra**

A movie theater has 400 seats. Tickets at the theater cost $8 for students, $10 for adults, and $7 for senior citizens. On a night when all the seats were sold, the theater made $3,535 from ticket sales. If the number of adult tickets sold was 10 less than the number of ...
*July 16, 2014 by Anonymous*

**Stats**

Find the number z ( 0.01) such that the proportion of observations that are less than z in a standard Normal distribution is 0.8 Find the number z ( 0.01) such that 59% of all observations from a standard Normal distribution are greater than z
*May 26, 2012 by Brittany*

**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 **

my ten digit is 1 less then the sum of 4 + 3 my ones digit is 2 more than my tens digit what number am i?
*November 5, 2012 by lori*

**intermediate algebra**

Essay.Show work.The area of a rectangular swimming pool is given by 3x^2+11x+6ft^2.One side lenght of the pool is given by 3x+2ft.What is the algebraic expression for the other side of the pool.Simplify,an include correct units as part of your answer
*April 12, 2012 by Lueshelle*

**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*

**Pre-Algebra**

can someone show me how step by step to convert this problem 45 mi/h=ft/s using dimensional analysis?Thanks.kj
*January 1, 2011 by kj*

**elementary**

Draw a picture Draw two ways to show 43 using place-value blocks.
*December 3, 2012 by Latha*

**Ecology**

Estimate the fish population of Lake Champlain using the Lincoln-Peterson Method. -Number of fish of 1st capture: 60 -Number of fish of 2nd capture: 65 Marked fish in 2nd capture: 10 -Number of fish of 3rd capture: 65 Marked fish in 3rd capture: 15 -Number of fish of 4th ...
*February 16, 2011 by Anonymous*

**Math**

How do you calculate this problem (55)(38/3)(5280) (55)(38/3)(5280) = (55)(38)(5280/3) You can see that 5280 is divisible by 3 using this trick. Add up the digits of the number and if that is divisible by 3 then the number is also divisible by 3.
*May 18, 2007 by Kim Jones*

**Math**

Hey can anybody please help me with this? Im stuck? I got the first part right, but I dont really know. Ok here's the problem: Annie kept track of the cars she saw on the highway? She saw twice as many Toyotas as Skyalks. The number of Pintos was eight less than the number of ...
*September 16, 2010 by Anonymous*

**math**

Mrs. Rossi wrote the following clus for a mystery 4-digit number. .The tens digit is twice the one digit .The hundreds digit is twice the ones digit. .The ones digit is 3. .The sum of the digits is 19. What is the mystery number? show the work.
*November 17, 2010 by gabriella*

**GLOBE/GEOGRAPHY HELP**

Rotate the Earth using the arrows on the globe that show the direction of rotation. As viewed from the North Pole, what direction is the Earth spinning? clockwise or counter-clockwise? I suggest you do this exercise in class, since that globe apparently has arrows that show ...
*October 11, 2006 by Suzanne*

**math**

1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. The first ...
*September 26, 2009 by Anonymous*

**math**

A company wants to send out a mailer. A mailer be sent only if it has an envelope and a stamp. For the number of mailers printed, the company has only 1/2 the number of envelopes needed. Of those mailers for which there are envelopes, the company has only 1/3 the number of ...
*July 23, 2014 by Johnny *

**Rounding Decimals**

Marley and Hassan rounded the number 7.483. Marleys answer was greater than 7.438. Marleys answer was greater than 7.483, and Hassan's anser was less. Towhat place might the number have been rounded by Marley? By Hassan? Explain.
*February 9, 2011 by Iris*

**math - question**

In a television game show, there are five questions to answer. Each question is worth twice as much as the previous question. If the last question was worth $6400, what was the first question worth? is the answer 400
*May 12, 2009 by anonymous*

**pre calculus**

if there are initial 2500 bacteria in a culture, and the number of bacteria double each hour, the number of bacteria after t hours cab n be found using the formula=N=2500(2^t).how long will it take the culture to grow to 75,000 bacteria.
*December 17, 2010 by john*

**math word problems**

I don't even know what this means. Please help Five cards are drawn in succession, without replacement, from a standard deck of 52 cards. How many sets of five cards are possible? A. 500 B. 12,994,800 C. 2,598,960 D. 433,160
*March 27, 2011 by kacee*

**geometry**

sketch a number of pens that can be constructed using 24 m of fencing
*March 28, 2010 by sadie*

**Math**

Write a two digit odd number using 5 and 6
*February 22, 2013 by Anonymous*

**algebra**

simplify the number using the imaginary unit i. √-16
*October 21, 2013 by johnny*

**math**

add 825 + 138 using number line
*February 6, 2014 by Jadarrius*

**grade 6 math**

Clayton and Olivia played a computer game. Olivia's final score was 2 306 421 and Clayton's was 2 302 972. Show these numbers on a number line. Whose score was greater? I know which score is greater but I am having trouble figuring out the number line and what to go by. Thanks
*September 29, 2010 by peyton*

**math **

Calculate the value of the following in exponential form, using standard scientific or "e" notation (for example, 105 = 1.05e2). Enter your answer with the correct number of significant figures. 885.75 g + 10.151 g - 25.50 g Calculate the value of the following in exponential ...
*September 23, 2010 by help?*

**math**

Lee forgot to study for her geography quiz, but she was not too worried because the quiz had only five true-false questions.Suppose she guessed all of the answers.What are the chances that she passed with four or five correct answers?
*January 8, 2013 by hamid*

**Physics**

1.A plane traveling at 300.0 km/h attempts to land on a 500 m runway. The planes engines and brakes accelerate uniformly at 5.0 m/s2. Will the plane be able to land safely? Show all your work. Include any equations used, the given and unknown. Show all calculations. Express ...
*October 22, 2014 by May*

**math**

Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function, H= p * at , (H = p*a^t) ...
*July 7, 2010 by Anonymous*

**Chemistry**

1) Balance this redox reaction using the oxidation-number method. Zn + O2 + HCl ZnCl2 + H2O 2) Balance this redox reaction using the half-reaction method. (basic solution) Zn + MnO4- Zn(OH)2 + MnO2
*October 13, 2010 by Sara*

**math**

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

**probability. review questions**

1)what is the probability that a seven-digit phone number has one or more repeated digits? 2) five letters, with repetition allowed, are selected from the alphabet. what is the probability that none is repeated?
*July 28, 2010 by sha*

**Math**

the lcm of two numbers is 60 and one of the numbers is 7 less than the other number, what are the numbers?
*September 9, 2014 by Me*

**Statistics**

Below Find a sequence of probabilites generated using excel.What is this mystery poisson functions M? Be precise, down to one decimal and show work.
*March 8, 2007 by Jason L*

**math**

Draw a picture of base-ten blocks and use the area interpretation for multiplication to show 34 X 28 complete the calculation by using a paper-and-pencil algorithm
*June 15, 2009 by heatherly*

**Algebra 1**

Okay. So I am completely lost with this... Any help would be great! 3. Solve the system using any method graphing, substitution, or linear combination. Make sure to show your work. 2x + 5y= 8 x + 3y= 2
*January 10, 2013 by Miranda*

**english**

In the following paragraph, are the words I have in capital letters adverbs? A five-speed bike combines the WORST of a three-speed and ten-speed. The typical five-speed is built on the same heavy frame as the three-speed, OFTEN, has the five-speed gear cluster and changer ...
*September 17, 2008 by Tracy*

**algebra**

the sum of two adjacent angle is 80the larger angle is 8less than 3 tines the smaller find the number of degrees in each angle
*February 5, 2012 by tanya*

**math**

1. Mickey has the number of books that Minnie does. If they had 1 less book between them, they would have 27 books. The question, of course, is how many books each has.
*February 26, 2013 by Anonymous*

**math**

Mickey has 1/3 the number of books that Minnie does. If they had 1 less book between them, they would have 27 books. The question, of course, is how many books each has.
*March 6, 2014 by Anonymous*

**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? Justify your answer.
*September 22, 2014 by Priscilla*

**chemistry**

The first ionization potential of the elements B, C, and N (atomic numbers 5, 6, and 7) steadily increases, but that of O is less than that of N. The best interpretation of the lower value for O is that: 1. the ionization potential of N is a maximum and the values decrease ...
*September 15, 2010 by dave*

**Algebra 1: 8th Grade**

Simplify each expression. Write your answers using positive exponents. Check Answers Please: 1) 2^3*2^4 = 2^7 2)10^6/10^9 = 1/10^3 3)3^5*3^1 = 3^6 4)5^7*5^-4 = 5^3 5)9^3/9^-10 = 9^13 6) 4^11/4^8*4^-2 = 4^5 7) a^2*a^3 = a^5 8)b^-9/b^4 = 1/b^13 9)c^-5*c^-2 = 1/c^7 11)(5d^4)(8d^6...
*April 28, 2009 by Joy*

**math**

How would I come about to the solution and what the answers to the question so I can help my son with his school work? 1.Check all the answers that are square roots of 36 a. 36^1/2 b.-(36)^1/2 c.9 d.6 e.-6 f. √36 2.)Which answers are equal to the expression 2 x √9 ...
*June 7, 2011 by James*

**MATH**

Word problem mark and melinda collect baseball caps. mark has 7 more than melinda. togheter they have 115 caps. how many baseball caps does each of them have? i got: melinda has 54 mark has 61 is that right? i have 2 more i cant figure out: 1) in a pet store the number of dogs...
*March 12, 2012 by marko*

**Finance**

Calculate the projects initial Time 0 cash flow, taking into account all side effects.? This will be a five-year project. The company bought some land three years ago for $4.2 million in anticipation of using it as a toxic dump site for waste chemicals, but it built a piping ...
*November 23, 2013 by Serenity1*

**math**

how can you get the answer 16 using these numbers 4,3,2,1=16 you can not use any number more than one time. Help! 3-1=2 2x2=4 4x4=16 Bold face type show numbers in the problem. please help You need to post a question before we can help. Just click on the "Post a New Question" ...
*September 13, 2006 by lorraine*

**math and music**

How would you go about listing all of the integer ratios? I would like to have the integers listed in ascending order by the product of each integer's numerator and the denominator. This is because in music, more "complex" ratios sound more dissonant. Every list would exclude ...
*November 19, 2010 by Gray*

**math and music**

How would you go about listing all of the integer ratios? I would like to have the integers listed in ascending order by the product of each integer's numerator and the denominator. This is because in music, more "complex" ratios sound more dissonant. Every list would exclude ...
*December 4, 2010 by Gray*

**Trigonometry**

Simplify each expression using fundamental identities. 1. Sin theta cot theta 2. 1-sin^2 theta / cos theta
*May 6, 2014 by Jake*

**Trig**

Simplify each expression using fundamental identities. 1. Sin theta cot theta 2. 1-sin^2 theta / cos theta
*May 7, 2014 by Anonymous*

**math, algebra**

can someone correct this for me. The pie that i'm using looks like this: it says that second day airfrieght is 40% next day airfrieght is 15% truck is 45% The problem says: If the company shipped a total of 550 items last month, how many were shipped using second-day ...
*January 5, 2007 by jasmine20*

**writing equations**

We did not find results for: Please help me do this problem: I need to write an expression for the cost of an ice cream cone and "t' number of toppings. The information is once scoop of ice cream for $3 and each topping is $1.
*September 11, 2012 by scott*

**Calculus and vectors**

it would appear that for any thrown object has a height that can be expressed using a quadratic expression. The maximum height occurred in the middle of the two zero values. Will this always be the case? What if the ball were thrown from a platform of height 1 m?
*December 16, 2013 by Court*

**Statistics**

Construct the appropriate control chart for the observations listed below, using 3 sigma limits. Product Number - Number of defects 1 - 3 2 - 3 3 - 6 4 - 5 5 - 3 6 - 5 7 - 2 8 - 2 9 - 3 10 - 4 11 - 6 a. Determine the upper and lower control limits. b. Discuss the chart you ...
*January 30, 2009 by Johnny*

**Biochemistry**

a closed circular DNA molecule has 3675 base pairs and a topological linking number (Lk) of 345. Using 10.5 base pairs per turn, what would the writhe number (Wr)be for the molecule in order for it to optimize its base pairing?? I'm guessing we use the formula Lk= Tw+Wr. ...
*October 31, 2013 by Anonymous*

**calculus**

A bacteria culture starts with 900 bacteria and the population doubles every 4 hours. Find an expression for the number of bacteria after t hours.
*November 5, 2010 by Anonymous*

**Math - Reposted - Mahi's question**

Fill the seven quart. Empty into the five quart, leaving two. Mark the 7 quart jar at that 2 quart level. dump the five quart contents. Pour the 2 quarts into the five, marking its level. Fill the seven quart to the 2 quart level where marked. Fill the five quart to the two ...
*February 9, 2007 by bobpursley*

**math**

Jacob walked three blocks to pings house, then five blocks to jamals house. Write a sentence to show that the distance from pings to jamals is the same as the return walk home. Name the property illustrated in your sentence.
*September 13, 2007 by Taylor*

**math**

I need help on how to do this problem y(y _ 5).(wy)using the commutative and associate properties of multiplcation. I need someone to show me please thank you
*January 10, 2009 by sandra*

**math**

a jetliner is crusing at an altitude of 31,680 ft. What is the altitude in miles? Show work by using demensional analysis.
*October 26, 2010 by Anonymous*

**Calculus**

Find the derivative of the function using the definition of a derivative. F(x)=squareroot(1-3x) Please show work for understanding, thank you! :)
*February 14, 2013 by Tori*

**algebra 1**

Simplify using long division(please show work so I understand) 1.Divide (72-8x^2+4x^3-36x)by (x-3) 2.Divide (8b^3-6) by (2b-1)
*April 15, 2013 by Jan*

**Math**

The cubes show how many students rode the bus to school today How many students rode the bus to school? A 14 B 15 C 16 D 17 Three rows of five blocks and 1 row with only two blocks
*January 6, 2015 by Amonnie*

**statistics**

According to a survey 35% of adults are against using animals for research. Assume that this result holds true for the current population of all adullts. Let X be the number of adults who are against using animals for research in a random sample of 2 adults. Find the ...
*April 9, 2011 by Sarita*

**statistics**

Webcredible, a UK-based consulting firm specializ- ing in websites, intranets, mobile devices, and applications, conducted a survey of 1,132 mobile phone users between February and April 2009. The survey found that 52% of mo- bile phone users are now using the mobile Internet...
*November 18, 2012 by Anonymous*

**MAth**

A bOY goes on VacATION with fivE shirts.each day HE used TWO diferent shIRts EACH day. HOW MANy DAYS will IT TAKE him TO USE thE FIVe SHIRTS WITHOUT REPEATINg the pattern
*October 24, 2012 by THERESA*

**Statistics**

the average length of time for students to register for fall classes at a certain college has been 50 minutes. a new registration procedure using modern computing machine is being tried. if a random sample of 12 students had an average registration time of 42 minutes with a ...
*March 10, 2011 by Jacy*

**accounting**

Salt River Copmany is evaluating a capital expenditure propsal that has the following predicted cash flows: Intial investment $(43,270) Operation Year 1 20,000 Year 2 30,000 Year 3 10,000 Salvage 0 a. Using a discount rate of 14 percent, determine the net present value of the ...
*September 21, 2012 by dillon*

**accounting**

Salt River Copmany is evaluating a capital expenditure propsal that has the following predicted cash flows: Intial investment $(43,270) Operation Year 1 20,000 Year 2 30,000 Year 3 10,000 Salvage 0 a. Using a discount rate of 14 percent, determine the net present value of the ...
*September 21, 2012 by dillon*

**values for k, math,help**

can someone show me the steps to work out this problem that is diving me nuts.. Directions: Find all positive values for k for which each of the following can be factored. x^2+x-k I am completely cluelis towards this problem....i've tried it many different ways.... x= -1/2 +- ...
*February 25, 2007 by jas20*

**math**

(b) the digits of a positive integer having three digits are in A.P and their sum is 15. The number obtained by reversing the digits is 594 less than the original number. Find the number. (c) if a,b,c are in A.P, prove that (i) (ab)^-1, 1/ac, 1/bc are also in A.P. (ii) a(b+c...
*September 23, 2009 by Edwin*

**math**

(b) the digits of a positive integer having three digits are in A.P and their sum is 15. The number obtained by reversing the digits is 594 less than the original number. Find the number. (c) if a,b,c are in A.P, prove that (i) (ab)^-1, 1/ac, 1/bc are also in A.P. (ii) a(b+c...
*September 23, 2009 by Edwin*

**MATH**

I have 9 digits. My ten millions digit is 0 and is 8 less than my hundred millions digit. My hundred millions digit is 1 less than my thousands digit, 8 more than my millions digit, twice my ten thousands digit, and 4 times my hundred thousands digit. My digits in the ones ...
*September 6, 2011 by TULAN*

**statistik**

can you show me the caculation :) Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company. This year, in a random sample of 400 employees, 180 were female. a.Give the null and the alternative...
*December 2, 2012 by mira*

**Algebra 2**

I need help with this problem because I do not have a graphing calculator. Explain how you would solve this equation using your graphing calculator in five steps then give the solution. 2x- 3y=8 5x+ 4y= 11 Also how do you determine how many solutions a system of equations has ...
*October 22, 2007 by Christian*

**Algebra**

Rewrite the rational expression as an equivalent rational expression with the given denominator. (Both are fractions) It's 21 over x squared minus 6x is equal to 1 over x (x-6)(x+5) -21 = 1 x2 -6x x(x-6)(x+5)
*March 16, 2009 by Estela*

**math**

Factor the given expression. a) 6y^2 − 53y − 9 b) Set the expression equal to zero and solve for y. y= (smaller value) y= (larger value)
*January 27, 2012 by Rachel*

**Algebra**

Use symbols to write the expression and then evaluate it Thirty six squared divided by six cubed The given expression symbol is? Evaluate it
*September 23, 2012 by Tammy*

**Math**

Find the general expression of the kth nonzero term in the taylor series for f(x)=3/(1+x) (exclude any zero terms in the series when finding this general expression)
*June 19, 2013 by Unknown*

**Math**

Find the general expression of the kth nonzero term in the taylor series for f(x)=3/(1+x) (exclude any zero terms in the series when finding this general expression)
*June 19, 2013 by Unknown*

**Algebre**

Please help I don't understand Contract the expression this is use properties of logarithm to write each expression as a single logarithm with a coefficient of 1. In3-3 In 9 +In 18 In3-2 in (9=6) In 3-2 (In 4 In 8) Thank you so much
*May 6, 2014 by Mary Ann*

**6th grade**

write an expression for the area of this rectangle 20cm on the top 4cm on the right at the top and 8cm on the left.evaluate your expression to find the area.
*September 20, 2009 by mahogany*

**math**

A.use the distributive property to write an expression that is equivalent -3(x + - 8) if the coefficient of the variable is increased by 10, what would the new expression be after you apply the distributive property?
*January 24, 2011 by karon*

**statistics**

A sample of purchases at the local convenience store has resulted in the following sample data, where x = the number of items purchased per customer and f = the number of customers. x= 1,2,3,4,5 f=8, 20, 8, 8, 7 What does the 20 stand for in the above table? Find the midrange ...
*September 29, 2012 by Anonymous*

**Biochem**

When trying to purify a protein using column chromatography, what happens to the mass of the protein eluted from the column if you accidentally run it dry? Would it be more or less? Thanks.
*October 18, 2010 by Nancy*

**math **

i have to write seven names for 8. using only numbers less than 10. and use at least three different operations in each name. i have to use parenthesis.
*January 30, 2012 by jared*

**math**

i am a 4 digit number.my thousands didgit is 4 less than my tens digit.my hundreds digit equals the sum of my tens digit and my ones digit.my tens digit is 4 more than my ones digit.my ones digit is 1.what number am i?
*August 10, 2011 by yonny*

**pre-algebra**

Mara ordered 5 bags of seed for $7.00 each and 3 wildflower seed kits for $9.00 each.She also paid a $13 shipping fee.Which expression shows the total cost? What is the solution of 5(n+m)when n=3 and m=6? Which inequality symbol makes the statement true? 11-(-2)_____-6-12 Mara...
*March 7, 2007 by Ricky*

**math**

A jar contains six red marbles, four green marbles and five yellow ones. a) determine the number of ways in which any thee marbles can be selected? b) Determine the number of ways to select four marbles where two are red and two are yellow? c) Determine the number of ways in ...
*October 21, 2012 by Carol*

**Math ms sue please please please help!!!!!!**

1)a bag contains five red marbles and seven blue marbles. you pull one marble out of the bag and replace it before putting out a second marble. what kind of event is this? independent, dependent, or both? 2) A bag contains 5 marbles. Without looking, you pick a marble with ...
*November 10, 2013 by Math help*

**math**

read the clues to find each number. it is a 7 digit number. it has a 0. the greatest digit is in the hundered thousands place. the value of the digit 1is i,000,000. the digit 6 stands for 6,000. the value of the digit 5 is 5 ones. the digit 8 has a value greater than 700 but ...
*September 6, 2012 by Winnie*

**Qualitative analysis**

Computer sales over the past 4 months have been 35, 34, 38, and 44 units. Using a 3-month moving average, forecast sales for the next month. Using a 3-month weighted moving average with the weights 3, 2, and 1, and with the most weight on the most recent data, forecast the ...
*August 5, 2014 by Nancy*

**maths**

1. If the first and third of three consecutive odd integers are added, the result is 51 less than five times the second integer. Find the third integer. Let the 3 numbers be x, (x + 1) and (x + 2). Then, x + (x + 2) = 5(x + 1) - 51 Solve for x. We want "three consecutive odd ...
*October 12, 2006 by francis*

**precalculus**

write each expression as the sine, cosine or tangent of a double angle. then find the exact value of the expression. a. 2sin 22.5 cos 22.5 b. cos^2 105- sin^2 105
*July 6, 2012 by ama*

**math**

0.3 divided by 0.06 simplify the expression 2: 4+3 time 3-5 simplify the expression 3: a jogger on a treadmill is jogging at 5 miles per hour. which of the following is the time it will take him to jog 1 mile
*January 24, 2013 by sadrac*

**Algebra**

Simplify radical terms, including fraction power expressions. Review the expression below and describe how to simplify the expression: 100 Please help, I just do not know how to describe this.
*September 26, 2013 by Tricia*

**algebra**

Find the smallest integer x where the expression srt(x-2)/x^2+x-6 is defined. I factored the denominator (x+3)(x-2) and the smallest value is 2 so the whole expression would have a value of 0. But, that is not the right answer. Thank you!
*October 23, 2014 by Trish Goal*

**math - graphs**

what type of graph is best to show the relationship between religion and countries of number or supporters/followers data?
*September 28, 2008 by Anonymous*

**geometry**

find one counterexample to show that each conjecture is false : 1. the sum of two numbers is greater than either number ? help please!!!
*August 17, 2010 by kayla*

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