Friday

September 4, 2015
Number of results: 72,182

**Statistics**

Standard Normanl Drill: A. Find the number z such that the proportion of observations that are less than z in a standard Normal distribution is 0.8. B. Find the number z such that 35% of all observations from a standard Normal distribution are greater than z. i have now idea ...
*September 10, 2007 by Devon*

**Math**

Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1/x^2+7x+12 divided by 2x-1/x^2+x-12 My work on simplifying the expressions: 4x-1/(x+3)(x+4)divided by 2x-1/(x+4)(x-3) If I've gone wrong please help me understand where I went wrong ...
*January 10, 2015 by Alex*

**4th grade math**

Find the mystery number. It is a 4 digit odd number. All the digits are different. None of the digits are 0 or 9. The tens digit is twice the ones digit, and the hundreds digit is twice the tens digit. The thousands digit is one less than the hundreds digit.
*September 19, 2012 by Denise*

**Science - Please Check My Answers**

Please help me with the following: Which is usually the best way to present or communicate inferred data? A. in a bar graph B. in a data table C. in a simple diagram D. in a written paragraph I know the answer isn't C or D(I got C wrong), but now I think the answer is B. Is ...
*September 11, 2014 by Brady*

**calculus**

find the exact arc length of the curve: y=0.5(e^x + e^-x) for 0 is less than or equal to x and x is less than or equals to ln2.
*May 6, 2015 by may*

**pre algebra**

Use the five steps for problem solving to answer the following question. Please show all of your work. Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her ...
*October 30, 2011 by Ciara*

**math**

write a word problem involving the number of pages in a book. then write the numerical expression that you would need to use to solve your problem.
*January 26, 2009 by michelle*

**Math**

Sarah is giving toys to the kids on the playground. She wants to make sure each child receives the same amount of each toy. Each child must have exactly the same number of pieces of chalk and jump ropes. She has 16 pieces of chalk and 24 jump ropes. a. Give one possible way ...
*October 5, 2013 by Anonymous *

**trig**

csc(x)=3 and pi/2 less than (x) less than 3pi/2, find cot(x).
*October 4, 2009 by Samantha*

**3rd grade**

i am greater than 30 and less than 40 the sum of my digits is less than 5
*April 19, 2010 by mike*

**Math**

Which of the following is a solution of the inequality -3 is less than 2x +1 is less than 5 Answer = 4
*August 17, 2015 by kareen*

**geometry**

Twice the measure of the supplement of an angle is 39 degrees less than five times the complement of the angle. What is the measure of the angle? (Hint: Let 180 – x represent the supplement and 90 – x represent the complement.)
*November 16, 2010 by saddie*

**Medical Terminology**

I need to devise a memory aid for any five terms relating to the genitourinary and five terms relating to the female reproductive system.
*July 19, 2010 by Randi Grzesik*

**math**

each question on a five-question multiple-choice quiz has answer choices labeled a, b, c and d. how many different ways can a student answer the five questions
*September 9, 2012 by nouf*

**algebra II**

Suppose a car door lock has a five-button keypad. Each of the buttons includes two digits. How many different five-button patters are possible?? (Hint: Each button can be used more than once.)
*July 6, 2010 by Lola*

**HUM 130**

What are the central beliefs of Islam, and how are they reflected in the "Five Pillars” ? Which of the Five Pillars do you feel would be easiest to fulfill, and which would be the most challenging? Why?
*December 16, 2007 by dawn*

**psychology**

A histogram shows that the mean of rain in your area has increased over the last five years. What is the probability that the mean will be higher this year than in the previous five years?
*January 14, 2011 by shelly*

**statistics**

A small company has 15 employees. Five of these employees will be selected randomly to be interviewed as part of an employee satisfaction program. How many different groups of five can be selected?
*September 25, 2011 by Anonymous*

**Math**

1. if 60% of 3/5 of a number is 36, then the number is......... Pls show working. 2. the average weight of 16 boys in a class is 50.25kg and that of the remaining 8 boys is 45.15kg. Find the average weight of all the boys in the class.
*April 20, 2015 by Bright*

**com170**

CAN YOU TELL ME IF I HAVE FIVE ADVERBS FIVE ADJECTIVES AND FIVE PRONOUNS I recently had a serious talk with my sister about her personal finance; she wants to be able to buy a new home this year. We carefully went over all her finance, while doing this we found out that her ...
*January 24, 2011 by angela*

**Algebra**

After solving a rational equation, why is it important to check your answer? How is this done? What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero?
*October 6, 2011 by Hazel*

**algebra**

after solving a rational equation, why is it important to check your answer? How is this done? What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero?
*January 26, 2012 by debby*

**Okay Last Q's For today Ms. Sue MAth**

There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P(red). Write the probability as a fraction in simplest form, a decimal, and a percent. 2. A number cube with the numbers 1 through 6 is rolled. Find P(...
*April 3, 2013 by jman*

**english**

write a 100-passage to scott mclean, the author of the course's textbook, in which you describe five details from her book that are good and five details about the book that are written well.
*July 26, 2011 by leatrice*

**math **

jill has four of her five game scores: 8 6 6 3 her average score for the five games is 6 points. what is the fifth game score? write an equation to help solve the problem.
*September 25, 2011 by Tyler*

**English**

1. She doesn't like it. Show her another. 2. She doesn't like it. Show her the other. 3. She doesn't like it. Show her others. 4. She doesn't like it. Show her the others. (Are the sentences all grammatical? Which ones are commonly used?)
*August 26, 2011 by rfvv*

**lo assignment**

write down five physical changes experienced by boys only and five experienced by girls only during puberty?
*March 3, 2015 by VRGINIA*

**physics**

A horizontal force of 790 N is needed to drag a crate across a horizontal floor with a constant speed. You drag the crate using a rope held at an angle of 33° (from the horizontal). (a) What force do you exert on the rope? Enter a number.1 N (b) How much work do you do on the ...
*December 9, 2009 by Manny Aragon*

**science**

using the numerical scale, one foot on the map would equal how many miles on earth's surface? show how you got your answer?
*October 16, 2008 by Anonymous*

**math 116**

-x/9=1/16 This is suppose to be solved using the multiplication principle. If possible please show me not just the answer but how you came up with it so I understand how to do these problems. Thank you
*March 22, 2009 by Sandra*

**Algebra II**

Solve the given system by using a substitution method 9x-2y=3 3x-6=y If you could show the steps because I have 10 problems for homework and I just need an example Thanks
*February 4, 2011 by JessieLynn*

**Math- Problem3**

Solve the following inequality and write your answer using interval notation. Please show all of your work. (1 / (x+8) ) ≤ ((8-5x)/43)
*June 9, 2011 by Greg - PV*

**College Pre-Algebra**

Solve -14x-7(4-x)< 3(2x-15). Write your solution using set builder notation. Please show all of your work.
*November 22, 2011 by Kameesha*

**algebra**

Solve the following inequality and write answer using interval notation. Please show all of your work. 2x-5/3x^4-x^3+275x-125>=0
*January 18, 2012 by sarah*

**math**

Calculate the future value of S of an annuity using the following formula: S =R(1+i)^n-1/i) given R=250,i=0.001;n=13 please show the workout thankyou
*April 6, 2013 by naomie*

**Calculus**

∫ x^3 √(16-x^2) dx evaluated between [0, 4] I know this is solved using trigonometric substitution, but I'm not sure how to work it. Please show steps so I will understand.
*March 14, 2015 by Nick*

**Algebra**

suppose a pendulum use to show the rotation of the earth has a period of approximately 16.9 seconds. What is the length using formula T=2pi sq root L/32
*August 23, 2015 by Roslyn*

**maths**

sorry, I know I already asked this, but I called some of my friends and it seems I copied down the homework wrong. The question is the number of arrangements of five letters from the word 'magnetic' that end in a vowel is: A 360 B 420 C 840 D 2520 E 7560
*October 17, 2007 by Audrey*

**math**

This was the question: Explain why the formula for determining slope using the coordinates of two points does not apply to vertical lines. The formula for determining a slope using two points does not apply to vertical lines simply because dividing by 0 is not allowed…...
*November 18, 2009 by lisa*

**5th grade**

On this day in 1789, the Supreme Court was established. Using resources in the classroom, learn five (5) facts about the Supreme Court’s roll in our nation’s government and summarize them in your own words. Can someone help me with this it's for my journal. Thank you
*September 26, 2010 by Johana*

**math, algebra,correction & help**

directions are: write each fraction in simplest form: (-15x^3y^3)/(-20x^1y^4) My answeris: (3x^2)/(4y) THESE TWO NEXT ONES ARE THE ONES THAT I DON'T UNDERSTAND: pROBLEM #1 DIRECTIONS: Write each expression in simplest form. (4x-28)/(5x-35) Problem #2 directions: Write each ...
*February 23, 2007 by jas20*

**Static**

The country of Statland runs a national lottery for its people. In this lottery, an urn contains 42 balls that are individually numbered 1, 2, ..., 42. Each week, 5 balls are drawn from the urn without replacement. Gamblers pay a small sum to predict these five numbers and the...
*January 24, 2015 by De*

**Math**

Day Number of Players Amount Collected Monday: 4 $ 88 Tuesday: 7 $154 Wednesday: 6 $132 Thursday: 3 $ 66 Friday: 2 ???? A.On Friday, the coach will collect fees from 2 more players. What is the total amount of money the coach will collect from the 2 players? Show or explain ...
*May 7, 2011 by Frances*

**math..word problem**

Tom and Fred are inseparable twins. They are in a five-person club. How many ways can these five line up for a photo if Tom and Fred must stand together?
*July 17, 2009 by M.A.*

**writing**

Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the book that are written well.
*January 16, 2011 by kelly*

**Physics **

Marcy and joe are racing on their bikes. Starting from rest, if Marcy has an average acceleration of 5.7 m/s? for the first five seconds how fast was he traveling at the end of those five seconds?
*September 26, 2012 by Larry *

**Algebra**

A barrel contains 181 gallons of paint and is being drained at a constant rate of 5 gallons per hour. Write and expression that models the number of gallons, g, after t hours.
*July 19, 2012 by Michael*

**math**

Howard Hughes attended 6136 shows. Write an expression to represent the average number of shows he attended if he accumulated the record over x years.
*August 23, 2009 by jen*

**Algebra**

1. Classify the following number as rational or irrational: 4.1 rational? 2. True or False: The Associative Property allows you to change the order of terms in an expression. False? Thanks -MC
*March 31, 2010 by mysterychicken*

**Math**

Use Brackets. Write Each Expression so that it equals the number in blue. a) 8+2x5 50 b) 6x3+1 24 c) 1+6x3+1 25 d) 2+8x5-1 49 e)7+14\7-5 14 f)12\2x5-4 2 Help Me Please i dont get what to do and how to.... ( \ stands for division)
*September 10, 2012 by Saira*

**Science**

1. Which statement about subatomic particles is NOT true? (1 point) Protons and neutrons have almost the same mass. Protons and electrons have opposite charges. Unlike protons and electrons, neutrons have no charge. Protons and neutrons have the same charge. 2. Which of the ...
*October 10, 2008 by Chelsea*

**math**

three sisters run a business. they charge $260 for each job. If the oldest sister earns 50% more than the middle sister and if the youngest sister earns 50% less than the oldest sister, how much does each sister earn per job? hint: Identify the variable and then write each ...
*December 3, 2013 by ava*

**Math/College Algebra**

A water trough with triangular ends is 9ft long, 4ft wide, and 2ft deep. Initially the trough is full of water, but due to evaporation, the volumn of the water decreases at a rate proportional to the square root of the volume. Using advanced concepts from math and physics, it ...
*September 6, 2008 by Debi*

**2nd grade**

What number am I My tens digit is double my ones digit. I am less than 70 greater than 60? How do u figure this out need help to explain how to get the answer..
*October 11, 2010 by cheri *

**math**

Assume that 3 digits are selected at random from the set { 2, 5, 6, 8, 9 } and are arranged in random order. What is the probability that the resulting 3-digit number is less than 900?
*February 20, 2012 by victoria*

**math**

a spinner is divided into 10 sectors. the number 1 through5 are each placed in two different sectors. find the probability of each event. P(less than 3) P (5) p (8)
*April 7, 2015 by gayle*

**English expression**

How many are there in Mi-na's family? There are five in her family: her father, her mother, her older brother Min-su, her younger brother Min-ho, and her. How many people are there in Mi-na's family? How many members are there in Mi-na's family? How many people are in Mi-na's ...
*March 24, 2008 by John*

**math**

The number has 8 digits none of the digits are the same 2. It is enemy divisible by 10 3. The value of one of the digits is 80,000 4. The digit in the millions place is the largest 1-digit odd number 5. The digit in the thousands place is 3 less than the digit in the millions ...
*January 9, 2013 by zb*

**financial Managerial **

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

**math**

Jill has four of her five game scores: 8,6,6,3 Her average score for the five games is 6 points. What is the fifth game score?
*September 16, 2010 by Anonymous*

**statistics**

The US Army is allowed only five test firings of the lance missile. The following figures represent number of feet the missiles missed the target by: 26, 147, 35, 63, and 51. Calculate the mean and the median. Which should the army report ?
*August 26, 2011 by Christopher*

**Chemistry**

This question is: How many orbitals are there in each of the following energy levels.. a) 1s b) 6p c) 10f d) 7d e) 5s Now.. do i use n^2 for the number of orbitals in each energy level? Ex. b) would be 36 OR can i state the number of orbitals in each sublevel using the shape? ...
*April 4, 2010 by Jeff*

**Algebra 1 Answer Evaluation (Reiny)**

Evaluate each expression for the given value(s) of the variable(s). 1. t^6 for t = 2 A: 1/64 2. r^0s^-2 for r = 8 and s = 10 A: 1/100? Simplify. 3. x^4/x^-6 A: 1/x^4y^6? Or x^4y^6? 4. a^-3/b^-2 A: 1/a^3b^2? Or a^3b^2? 5. The lead in a mechanical pencil has a diameter of 0.5 mn...
*January 31, 2014 by Anonymous*

**math**

(ADBC) (DACB) (BADC) (BDCA) (DCAB) 8 5 3 1 2 Using that table, determine: a) the total number of votes b) what does (ADBC) mean c) What the "8" mean d)how many votes will be necessary for a majority, why? is a)19 b) rank c) the number of votes d)?
*November 20, 2008 by jason*

**Math...Please help I need this done by 6:00**

This was the question: Explain why the formula for determining slope using the coordinates of two points does not apply to vertical lines. The formula for determining a slope using two points does not apply to vertical lines simply because dividing by 0 is not allowed…...
*November 18, 2009 by lisa*

**arithmetic**

1. The first and last term of an A.P are, a and l respectively, show that the sum of nth term from the beginning and nth term from the end is a + l. 2. If mth term of an A.P be 1/n and nth term be 1/m, then show that its mnth term is 1. 3. The sum of four numbers which are in ...
*May 23, 2014 by kartik hans*

**communications**

This is homework for communications class, and I'm not sure what the hell I need to do. I need to get a good grade, because I'm not doing to well. Please help. Here is what to do. Using I language Practice using I language. Use it at work, school, home with your family, any ...
*April 11, 2010 by marie*

**Physics 1**

A golf ball is struck with a five iron on level ground. It lands 92.0m away 4.20s later. What was (a) the direction and (b) the magnitude of the initial velocity? I have no idea how to go about using the information given to find the first part (A). Even just a hint would be ...
*September 11, 2014 by Molly*

**algebra3**

which inequality is tge solution of 6x negative 3 greater than or = to 7 plus 4x? a.}x is greater than or =to negative 5 b.}x is greater than or= to 5 c.}x is less than or = to 5 d.}x is less than or = to negative 5 Your problem: 6x - 3 ≥ 7 + 4x Solve an inequality like ...
*January 11, 2007 by Darius Graham*

**math**

this makes no sense to me and won't to my child either. the instructions for solving, are try 3 numbers that add to the total with 2 numbers equal and the other 8 less then revise numbers till you get the answer. the question is: Jan, Mya And Sara ran a total of 64 miles last ...
*August 23, 2012 by Paulette*

**Art Help Please!!!!!**

To create a portfolio of work, thsi artist would do all of the following except. The picture is of a robot in black and white. A. include more drawings of characters the artist has created to show creativity. B. include a variety of color schemes and designs to show diversity ...
*November 25, 2014 by Callie*

**English**

My teacher wants me to proofread and make corrections on the following. Can you help me. I will send over the question and then below is what I have revised will you check it for me? The following paragraph contains five errors in grammar, punctuation, mechanics, or usage. ...
*February 3, 2010 by Robin*

**math**

find the mystery number, it is a 4 digit odd number, all the digits are different, none of the digits are 0-9, the tens digit is twice the ones digit, and the hundreds digit is twice th tens digit. the thousands digit is one less than the hundreds digit?
*September 19, 2012 by Evelyn*

**maths --plse help me..**

In a purse there are 20-rupee notes 10-rupee notes and 5-rupee notes. the number of 5-rupee notes exceeds two times the 10-rupee notes by one. the 20-rupee notes are 5 less than the 10-rupee notes. if the total value of the money in the purse is Rs185 find the number of each ...
*December 11, 2012 by snigda*

**maths --plse help me..**

In a purse there are 20-rupee notes 10-rupee notes and 5-rupee notes. the number of 5-rupee notes exceeds two times the 10-rupee notes by one. the 20-rupee notes are 5 less than the 10-rupee notes. if the total value of the money in the purse is Rs185 find the number of each ...
*December 11, 2012 by sunil*

**com 155**

Write a 100-word passage to Susan Anker, the author of the course’s textbook, in which you describe five details from her book that are good and five details about the book that are written well.
*September 26, 2010 by bb*

**Gr. 10 Math**

Evaluate each expression for the given value(s) of the variable(s). 2x^2 - 3xy + 4y^2 for x=2, y=-1 My Answer: (2(2^2)) - (3*2*-1) + (4(-1^2)) = 10 Text Book Answer: 18 Please help. Am I doing something wrong? I redid the expression 3 times and still got 10. But why textbook ...
*April 20, 2010 by John*

**Statistics**

A gambling game pays 4 to 1 and the chance of winning is 1 in 6. Suppose you bet $1 on this game 600 times independently. 3A - Find the expected number of times you win. 3B - Find the SE of the number of times you win. 3C - Find the chance that you lose more than $50 (that is...
*May 18, 2013 by Din123*

**Statistics**

A gambling game pays 4 to 1 and the chance of winning is 1 in 6. Suppose you bet $1 on this game 600 times independently. 3A Find the expected number of times you win. 3B Find the SE of the number of times you win. 3C Find the chance that you lose more than $50 (that is, your ...
*May 18, 2013 by Pebble*

**Probabilities**

A safety engineer claims that only 60% of all drivers use seat belts on short trips. The probability that exactly 2 out of five drivers will be using his seat belts is closest to?
*May 1, 2009 by Andrey L*

**Solve Inequality**

Solve the inequality. Express your solution using interval notation and please show all of your work. x(x + 6)(8 – x) >= 0 I need help, I guess I'm not understanding the interval notation portion. I know, that when 0 <= x <= 8 and x <= -6 that the statement is true...
*May 29, 2011 by Armando*

**Algebra 2**

Using Equations The second angle of a triangle is three times the first and the third is 12 degrees less that twice the first. Find numbers for angles. I do not understand how to solve this equation.
*September 22, 2011 by Kym*

**Math**

Find the smallest number N such that: The number of divisors of N is A. The number of divisors of A is B. The number of divisors of B is C. The number of divisors of C is 3. Details and assumptions The divisors include 1 and the number itself. For example, the number of ...
*June 4, 2013 by Mathslover*

**Physics **

A crate sets on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate (gravity would be acting into the page). Man one and man two apply forces F1 and F2, at angles of θ1 and θ2 respectively, with the goal of ...
*October 9, 2014 by Johnny *

**math**

*The number has 8 digits, none of the digits are the same. *It is evenly divisible by 10. *The value of one of the digits is 80,000 *The digit in the millions place is the largest 1-digit odd number. *The digit in the thousands place is 3 less than the digit in the millions ...
*September 25, 2012 by rod*

**math**

Someone HELP pleas. 3. One hundred twenty-five tickets have been sold for an event at a local theater. If this represents 25% of the capacity for the theater, which of the following is the capacity? A. 156 B. 375 C.410 D. 500 4. In a bag of candy, there are five red candies ...
*April 16, 2013 by Siman*

**arithmetic**

1. The first and last term of an A.P are, a and l respectively, show that the sum of nth term from the beginning and nth term from the end is a + l. 2. If mth term of an A.P be 1/n and nth term be 1/m, then show that its mnth term is 1. 3. The sum of four numbers which are in ...
*May 24, 2014 by kartik hans*

**English**

2. Which expression best represents the view a fatalist would have? A. "Whatever will be, will be." B. "The best is yet to come." C. "We are still masters of our fate." D. "You don't know what you have until its gone." 3. In which of these lines is the meaning of the word ...
*March 11, 2015 by help?thanks*

**AP Statistics **

12) Which of the following statements is true? a) The sampling distribution of the difference between two proportions will always be normal. b) When comparing two population proportions, either sample proportion can be used as the unbiased estimate of the true population ...
*March 14, 2013 by Joker*

**Algebra**

Show all steps The maximum number of volts, E, that can be placed across a resistor is given by the formula E=sq root(PR), where P is the number of watts of piwer that the resistor can absorb and R is the resistance of the resistor in ohms. Solve this equation for R. Use the ...
*October 25, 2011 by Betty*

**Chemistry**

Develop a recipe for 1.00L of pH 4.50 buffer using only 17.4M HC2H3O2 and 3.00M NaOH (and deionized water). Be sure that it can accommodate an addition of at least .50 mol of strong acid or base with a change in pH less than/equal to 1.
*December 12, 2011 by Shana*

**math**

Consider a rectangular array of dots with an even number of rows and an even number of columns. Color the dots, each one red or blue, in such a way so that in each row half the dots are red and half are blue, and also in each column half are red and half are blue. Now, ...
*April 1, 2010 by new*

**Math**

Consider a rectangular array of dots with an even number of rows and an even number of columns. Color the dots, each one red or blue, in such a way so that in each row half the dots are red and half are blue, and also in each column half are red and half are blue. Now,whenever...
*April 2, 2010 by Teddie*

**2 grade math**

Complete the chart to show the number 217 . 1 hund. blank tens and one ones?
*September 30, 2010 by osi123456789*

**Algebra B**

I am confused as to what the nth power is. Is it any number as an exponent that leaves the radicand the same? Could you please show me an example? thanks,
*February 5, 2011 by Nancy*

**Chemistry**

What mass of magnesium, Mg, contains the same number of atoms as 12g of Carbon, C Could you please show the method too Thanx :)
*March 7, 2011 by Jannie*

**math**

Turn 7 21 into a percent and decimal. First simplify the fraction. Show your answer on the number line.
*March 9, 2011 by julie*

**Math**

Solve the following equation in the complex number system. Please show all of your work. x^4 – 13x^2 – 90 = 0
*June 9, 2011 by Greg - PV*

**chem**

calculate the number of oxygen atoms in 0.25 mol fluoroacetic acid (C2H3O2F) show work if possible
*March 28, 2012 by lisa*

**Math**

Use 16 blocks to build a house.There are 10 squares and 8 triangles. show work and write number sentence
*December 2, 2012 by Kwenton*