Number of results: 85,362

**Statistics (Multinomial)**

For the multinomial distribution: Show that summation of the probability mass function across all possible values equals 1. Show via summation of the probability mass function that the expected value of Y_i = n * p_i The textbook that I'm using left the above as "exercises to ...

*October 5, 2009 by Sean*

**Math**

Jerome estimate that the total number of people for the past 2 years visiting the aquarium is 900,000. Gina estimated it to be 870,000. Write a number sentence to show how Jerome found his estimate.

*February 15, 2009 by Elecia*

**Math**

Use the clues to figure out the six-digit decimal number. 1. It is greater than 3,000 and less than 3,200 2. All the digits are different 3. The digit in the undredths place isa multiple of 5. 4. The product of 5 and th digit in the ones place is 0. 5. The digit in the tenths ...

*October 11, 2007 by Emily*

**math-please check my answer**

Translate the following the product of 47% and some number (using q for some number) .47q is my answer correct?

*July 31, 2010 by Michelle*

**Mathmatics**

The number of t teaspoons in b tablespoons can be found by using the equation b=t/3 . Find the number of tablespoons needed for a recipe that calls for 8 1/2 teaspoons of sugar.

*March 22, 2011 by Themathperson*

**math**

Using each of the 7 digits 1, 2, 3, 4, 5, 6, 7 only once, what is the difference between the smallest 4-digit number that can be made and the largest 3-digit number that can be made?

*January 5, 2014 by nisrin*

**algebra**

the difference of one more than six times a number and four more than three times the same number, using numbers 3, 5 and 7.

*September 28, 2015 by chamar*

**English expression**

e.g. Write the small letters in the alphabet continuously putting together. Is this expression correct? Do you have some more good expressions?

*March 11, 2008 by John*

**Trigonometry**

I can't figure out the answer to this problem Use a right triangle to write the expression as an algebraic expression. (Assume x is positive) Tan(sec¯¹ [sq rt.x² + 4/x])

*March 25, 2009 by Juilian*

**Precalc**

how to write each expression into a single logarithm. ln(x-1/x) + ln(x/x+1) - ln((x^(2)-1)) the answer is: -2ln(x+1) steps please i tried solving this but ended up getting this long expression

*February 2, 2011 by Amy~*

**pre-cal**

use the properties of logarithms to condense the logarithmic expression. write the expression as a single logiarithm whose coefficient is 1. 2IN(x+3)-3INx

*October 9, 2012 by ladybug*

**trig**

Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression. 2tan 2pi/3 / 1-tan^2 2pu/3

*June 21, 2013 by tony*

**Statistics**

A bottling company uses a filling machine to fill glass bottles with mango juice. The bottles are supposed to contain 300 milliliters (ml). In fact the amounts vary according to a normal distribution with mean = 298 and standard dev = 3 ml. What is the probability that an ...

*March 2, 2007 by Jason L*

**language**

spade, sparkle, sparrow, special, specific, speckle, speech, spill, spirit, splash, splatter, splendid, split, spoke, spool, spouse, sprain, spring, sprinkle, spurt Write a letter using all the spelling words. make your spelling words in capital letters. Make sure that you ...

*November 8, 2012 by mythreyee*

**math corrections**

16. Carlos sells video games on Web site. The cost for his web site is $75 per year. Carlos sells each video game for $25. What inequality can Carlos use to determine g, the number of video games he must sell to make a profit of at least $50 per year? A.100g less than and ...

*August 14, 2014 by vincent*

**statistics**

Researchers conducted a survey of parents of 66 kindergarten children. The parents were asked whether they played games with their children. The parents were divided into two groups: working class and middle class. The researchers wanted to know if there was an association ...

*August 23, 2013 by dd*

**algebra**

can you simplify an expression or substitute in an expression?

*April 2, 2008 by will*

**Math**

How do you write down an expression? Ex. 3*5+2 3*6+2 3*8+2 3*-4+2 3*3+2 3*2+2 3*10+2 Expression: 3a+2

*October 25, 2011 by Anonymous*

**MATHS**

An expression is shown. -5 1/2 + 7 3/4 What is the value of the expression?

*May 24, 2016 by roma*

**Math:Finance**

What amount must be remitted if the following invoices, all with terms 4/10, 2/30, n/60, are paid on May 10? $850 less 20%, 10% dated March 21 $960 less 30%, 16 2/3% dated April 10 $1040 less 33 1/3%, 25%, 5% dated April 30

*December 11, 2015 by Mike*

**ENG290**

I am to create a timeline that illustrates the history of children's literature in western culture using five key milestones of children's literature. CAN YOU PLEASE HELP

*October 21, 2014 by sandra*

**Maths**

Some amount of money is distributed to a some students equally. If the number of student is decreased by 10 then they will get 20 rupees more. If student is increased by 10 then they will get 4 rupees less. Find the amount and number of student?

*July 8, 2016 by Rabin*

**HELP PLZ**

1. Milo bought pounds of red apples and pounds of green apples to make applesauce. How many pounds of apples did he buy in all? a. Write an expression that models the problem. b. What is the LCD of the fractions in your expression? Explain how you found the LCD. c. Evaluate ...

*December 17, 2013 by mary ann*

**math**

if a & b are perpendicular vectors, show that a)(a+2b).(a-b)=|a|^2-2|b|^2 b)(a+b).(a-b)=|a|^2+|b|^2 *how to show it?just multiply it?if yes where does||come from? does||show that it should be a value?

*December 25, 2011 by Yuni*

**math**

you spend a total of 25 minutes typing an email and writing a letter. you can type 6o words a minute and write 20 words a minute. let m be the minutes you type the email. write an expression in terms of m for the total number of words you wrote. evaluate the expression if you ...

*November 17, 2010 by courtney*

**O98 algebra**

To receive a C grade, a student must average more than a 77 but less than 85. If Emma received a C in the course and had five grades of 74,83,73,67,and 85 before taking the final exam, what were the possible grades for her final there were 100 points. (Assume all six grades ...

*June 10, 2016 by Sheba*

**math**

new flat- screen TVs flash even faster than older TVs. Since dogs need a flicker frequency rate of 75, DOGTV works as intended only on newer TVs. One type of new Tv flashes 500 frames each second. How many more frames does it flash than an older TV with a flicker frequency ...

*April 30, 2013 by osi*

**Chemistry**

1) What is the atomic # for selenium? 34 2) Write the full electron configuration for selenium following the (n+l) rule? I am not sure what is meant by n+l 3) write the electron configuration, grouping electrons by their "n" values. [Ar]3d10 4s2 4p4 Are these correct? 4) What ...

*November 1, 2011 by Hannah*

**College Algebra**

Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of equations using Gaussian Elimination or Gauss-Jordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.

*November 17, 2010 by Roger*

**Math**

I am number greater than 70 000 but less than 90 000.My ones digit is the only even prime number.My tens digit id the same as my ones digit.My ten thousands digit is four times my ones digits.Both my hundreds and thousands digits are half the ten thousands digits.What number ...

*June 6, 2012 by Anne*

**Algebra**

Andrew factored the expression 20x^3-12x^2+8x as 4x (5x^2-12x^2+8x). But when Melissa applied the distributive law and multiplied out 4x (5x^2-12x^2+8x), she got 20x^3-48x^3+32x^2; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to ...

*June 29, 2011 by traci*

**algebra**

Andrew factored the expression 20x^3-12x^2+8x as 4x(5x^2-12x^2+8x). But when Melissa applied the distributive law and multiplied out 4x(5x^2-12x^2+8x),she got 20x^3-48x^3+32x^2; thus, Andrew's solution does not appear to check. Why is that? Please help Andrew to understand ...

*July 24, 2011 by ROCKY*

**Math**

In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 7? 8 5 10 3 #

*July 28, 2012 by Jordan*

**Math**

Hey can someone review my math and see if i did it correctly? The math question is: Choose one product from your business and determine the markup and gross profit for it. Assume that the retail price of the product is $85, the cost is $47, and the expenses are $13. Then using...

*December 6, 2015 by Justine*

**science-SCI/230**

This is my first time using Jishka. Well, registering and using the site. I have checked the site when researching class topics we are learning. I don’t think I really have a question but I am looking for clarity of something for class. I just want to make sure that I have ...

*November 10, 2011 by Nolagrl*

**1st grade**

I don't know how to do this.. I don't understand it. Use | and . to show the number 42

*February 9, 2009 by Xitlali*

**math**

Solve the inequality and show the number line. x + 29 < 33 for x > 0

*February 2, 2010 by TOM*

**algebra**

what is a good number sentence to show that 5 is a factor of 35?

*December 20, 2010 by kai*

**Math**

Show that [x] + [x + 1/2] = [2x] when x is a real number. [x] is the floor function, where [5/2] = 2 and [-5/2] = -3.

*June 5, 2011 by Sean*

**Math**

Show whole number solution from 0 to 8 for inequality x - 5 > 1

*October 30, 2011 by Shone*

**Math**

Write 2 24/12 as a whole number. Show work.

*November 5, 2012 by Jennifer*

**math**

What is the percent of each number? 1. 3% of 45 2. 44% of 125 3. 95% of 64 4. 2% of 15.4 Show your work

*November 14, 2013 by Please Help!!!*

**Maths**

Show that the reciprocal of 3+2√2 is an irrational number

*September 21, 2014 by T.N.*

**Math of class-10**

Show that 4/ root 3 is irrational number

*June 5, 2015 by Anonymous*

**math**

Draw a number line to show 3/4 and 6/8 are equivalent.

*May 1, 2016 by Hallen*

**math**

The product of two numbers is 60. If you divide the larger number by the smaller number you get 15. What are the two numbers? Please show how your two numbers meet the 2 criteria stated in this problem.

*January 19, 2011 by Anonymous*

**intermediate algebra**

joe has a collection of nickles and dimes that is worth $3.95. if the number of dimes was doubled and the number of nickles was increased by 21, the value of the coins would be $8.40. How many nickles and dimes does he have? show all your work. help me please

*August 22, 2012 by jr*

**science**

How does using coal to generate electricity A. using more coal reduces the amount of pollution from using oil <--------------- B. using improves the quality of nearby water C. using coal, instead of wood from trees, helps improve the environment D. using coal releases ...

*April 29, 2014 by help plzz*

**Calculus**

In the interval (0 is less than or equal to x which is less than or equal to 5), the graphs of y=cos(2x) and y=sin(3x) intersect four times. Let A, B, C, and D be the x-coordinates of these points so that 0<A<B<C<D<5. Which of the definite integrals below ...

*December 5, 2013 by Rasheda*

**Algbra 2**

Divide using the division algorithm. Write your answer in the form Q + RD where the degree of R is less than the degree of D. x^3+3x+4/x+1 How am I supposed to do this?

*September 12, 2015 by Idkm*

**Algebra**

How come (2xy^2)^3 is equal to 8x^3 y-6? I thought that six exponent should be a five since you add them together. So 2 and 3 should be five. But why is this?

*September 12, 2009 by Elisa*

**Psychology**

In organizational psychology, the "Big Five" refers to five general principles to be used when making changes.

*February 16, 2010 by lola*

**Math**

Three dimes to five nickels ratio if three to five total 120 coins how many are fimes

*May 8, 2014 by Anonymous*

**Math**

Please help! x-2y+z=7 2x+y-z=0 3x+2y-2z=-2 a. Solve the above system of equations using Gaussian Elimination or Gauss-Jordan Elimination. You must show row operations. b. Solve the above system of equations using Cramer's Rule.

*November 17, 2010 by Angel*

**math ~dont know all but check some~ pls help!!!**

1. Draw a model to represent the polynomial x2 + 2x + 4. (1 point) 1 big square, 1 tall rectangle, 4 little sqaures 1 big square, 2 tall rectangles, 4 little sqaures in the shape of an "L" 2 big sqaures, 4 little squares none of these 2. Simplify the polynomial. –3f2 + 4f...

*May 21, 2014 by TTR+S<3*

**physics**

Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 4.44 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.00 kg and r1 = 1.00 m, (2) m2 = 4.50 kg and r2 = 7.10 m, (3) m3 = 3.60 ...

*April 22, 2014 by Anonymous*

**Chemistry**

If 325mL of a 0.58 M solution of a propanoic acid (a fatty acid) was mixed with excess glycerol what is, the maximum number of molecules of fat or oil that could result?(you will need Avogadros number = 6.022 X 10 to the 23rd power)....I need to show all work and im completely...

*December 3, 2014 by Jennifer*

**Math**

The Robinsón's electric bills for the last five months have been $157.60, $182.09, $175.15, $166.27, and $162.04. Find the average of the bill. (To find the average, divide the sum by the number of addends.) -What does the sentence in the parentheses mean? do you have to find...

*June 26, 2012 by Losa: Flame Girl*

**math**

1. First of all, pick the number of times a week that you eat chocolate. This number must be more than one but less than ten. 2. Multiply this number by 2 (just to be bold). 3. Add 5 (for Sunday). 4. Multiply it by 50. 5. Add 1750. 6. Add the last two digits from the year you ...

*May 28, 2012 by opg*

**Mathematics--Urgent**

Don is planting flowers in the school garden's planter box. The planting are is five and one-half feet long and 10 inches wide. Each plant is 2 inches wide. There must be 8 inches of space between the flowers. What is the largest number of plants he can put into the planter ...

*October 21, 2013 by Anonymous*

**math**

semir, sarah and sung so decided to raise money for a local homeless shelter by working in a local deli. the deli agreed to donate to the shelter a portion of the profits from each meal the three sold. semir sold 3 times as many meals as sarah. sung sold 2 more meals than ...

*October 14, 2014 by harry*

**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

*October 23, 2007 by Christian*

**math**

Five houses, next door to each other, are on the even side of the road. They are all three digit numbers and the largest is a perfect cube.The second lowest is a triangle number.

*March 3, 2014 by george*

**Sequences**

Show full steps: 1a) Determine the formula for the nth term for 7,12,17... b) Determine the value of the 19th term,t19. 2) Determine the number of terms in the sequence 4,12,36...2125764. Show all necessary steps. There are 15 more questions but I think if you help me with ...

*May 25, 2013 by Mercy*

**math 12 - sequences and series**

Given the expression Sn = n^2 + 2n for the sume of the first n terms of a series, determine a) An expression, in simplified form, for Sn-1 in tmers of n b) an expression, in simplified form, for the nth terms, tn in terms of n

*March 1, 2010 by CL*

**math**

Using numbers,words or symbols,write a rule that could be used to find the total cost of any number of museum tickets. You may use n to represent the number of museum tickets bought.

*December 3, 2007 by Paul*

**Math**

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*

**computer science**

a) What is the largest positive number that can be represented in 12 bits using one’s complement? Represent the number in bits and decimal as well. Assume the first bit is the sign bit. (2 marks)

*March 23, 2014 by lex*

**English**

“Well that’s sculpture, making a ’74 Toyota look like a ’63 Corvette, only I didn’t think of it that way... I was doing good work, and I was making good money. A. to prepare the reader for a change in topic. B. to show Ramirez’s pride in discussing his work. C. to ...

*December 2, 2014 by Jim*

**math**

you are making a fence of your garden the length is five less than two times the width write a polynomial that represents the perimeter of the garden write a polynomial that represents the area of the garden

*February 22, 2015 by afnan*

**Math**

An adult polar bear walks at an average rate of 5 kilometers per hour. 1. write an equation to find k, the number of kilometers a polar bear bear can walk in h hours. 2.make a table to show the relationship between the number of kilometers k a polar bear can walk and the ...

*February 21, 2015 by Angelina*

**Final Exam- Honors Physical Science**

how can you determine the number of protons, electrons,neutrons, atomic number, and the atomic mass of an element using the periodic table? Atomic mass is given in the table, as well as the atomic number and atomic mass number. Atomic number is the number of protons, which is ...

*June 4, 2007 by Kate*

**math**

What mystery 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 digits 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 ...

*April 16, 2012 by Adonis*

**Algebra**

Question 1 Solve using the multiplication principle then graph. -15>-75 Question 2 Translate to an equality. Use the variable x. The number of people in the chess clubi less than or equal to 15. Question 3 Solve using the addition and multiplication principles 2.1x+20.8>...

*March 6, 2010 by Queen D*

**5th grade algebra word problem**

Ron made cookies for the fair. His sister made candy. Four cookies were packaged together, and 6 pieces of candy were packaged together. There were 6 more packages of packages of candy. Write an expression for the number of packages of cookies.____. Then find the value of the ...

*September 7, 2010 by Kathy*

**Biology Help Please!**

1) A transcriptional fusion of regulatory sequences of a particular gene with a reporter gene results in relatively uniform expression of the reporter gene in all cells of an organism, whereas a translational fusion with the same gene shows reporter gene expression only in the...

*May 2, 2016 by Tenshi*

**math**

can someone help me ? If you roll a die many times, what would you expect to be the relative frequency of rolling a number less than 6? A) 2 out of 3

*March 25, 2007 by Carlos*

**Math**

Translate to an inequality. Use the variable x. The number of people in the chess club is less than or equal to 14. The answer is ? ? ?. I am lost!!

*October 2, 2009 by Tracy*

**geometry**

In exercises 17-20, a single die is rolled one time. Determine the probability of rolling a number greater than 3 or less than 5.

*June 11, 2012 by angela*

**math**

translate and simplify"six less than twice the sum of a number and three" choices are A)-2x b)2x c)-2x+9 d)2x-3 I set it up 2(x+3)-6 2x+6-6 answer=2x Is this correct Thanks

*January 21, 2013 by ES*

**algebra 2**

A single die is rolled one time find the probability of rolling a number greater than 3 or less than 2, need help

*April 29, 2013 by bernie*

**math**

what is the mystery number?greater than 1oo -odd more than 3 tens less than 150 the sum of the digits is 12?? please help

*February 5, 2015 by Anonymous*

**Algebra**

PLEASE HELP!!! Write a function rule that represents each sentence.: 1. 7 less than three times m is n. 2. 14 more than the quotient of a number t and 10 is u.

*February 17, 2016 by Samantha*

**math**

Fifteen painters can paint a number of houses in 12 days .if the number of painters is increased by 5, how many days less would it take the painters working at the same rate to paint the houses?

*January 5, 2015 by kgk*

**math**

Fifteen painters can paint a number of houses in 12 days .if the number of painters is increased by 5, how many days less would it take the painters working at the same rate to paint the houses?

*January 10, 2015 by king*

**algebra**

Consider making a four-digit I.D. number using the digits 3,5,8, and 0 a. How many I.D. numbers can be formed using each digit once? b. How many can be formed using each digit once and not using 0 first? c. How many can be formed if repetition is allowed and any digit can be ...

*April 1, 2013 by Karina*

**calc**

Use the Mean Value Theorem to show: -x < sinx < x for all x > 0 (and where I have the inequalities, it's supposed to be less than or equal to for the first two and greater than or equal to for the last one, I just didn't know how to type it)

*November 3, 2011 by nate*

**College Algebra**

Let x = the number of birds that Tim has. Let y = the number of dogs that Tim has. Tim has more than twice as many dogs as he has birds. Tim has more than 2 birds. The total number of dogs and birds that Tim has is less than 11. Set up an appropriate system of linear ...

*October 4, 2016 by Marie*

**English**

Can you please tell me if it is correct? Write five things you have to do when at home and five you don't have to do.

*May 4, 2011 by Henry1*

**algebra**

Andrew factored the expression 28x©ø-6x©÷-10x as 2x(14x©ø-3x©÷-5x) . But when Melissa applied the distributive law and multiplied out 2x(14x©ø-3x©÷-5x), she got 28x©ù-6x©ø-10x©÷; thus, Andrew¡¯s solution does not appear to check. Why is that? Please help ...

*June 12, 2011 by cal*

**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*

**math/116 algebra**

Application Practice Answer the following questions. If appropriate, use Equation Editor to show your work. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting. Each part is ...

*March 21, 2011 by ruth*

**Algebra 2**

For the period 1990-2002, the number s (in thousands)lf cellular telephone subscribers in the United States can be modified by S=858t^2 + 1412t + 4982 where t is the number of years since 1990. In what year did the number of subscribers reach 50 million? The choices are the ...

*September 24, 2013 by Krystal*

**Genetics**

Describe the inheritance and expression of cystic fibrosis, Tay-Sachs disease and sickle-cell anemia. I didn't understand what the question meant by "expression." Please help!

*February 24, 2008 by Anonymous*

**precal**

use a right triangle to write the expression as an algebraic expression. assume that x is positive and in the domain of the given inverse trigonometric function. sin(sec^-1 ãx^2+ 25/(x))

*March 8, 2010 by adam2*

**College Math**

Simplify the algebraic expression 3xz + 4xy – 2yz + xy + 5yz – 9xz and evaluate it for x = 3, y = -2, z = -5. Identify the variables, constants, and coefficients in the simplified expression.

*October 11, 2012 by Richard D*

**College Math**

Simplify the algebraic expression 3z3 – 5x2 + 2 – 4y2 + 6x2 – 4z3 – 7y + 12 – 2x and evaluate it for x = -2, y = -3, z = -4. Identify the variables, constants, and coefficients in the simplified expression.

*October 11, 2012 by Richard D*

**physics**

find the expression for the acceleration of a cylinder rolling down without slipping on a rough inclined plane also obtained an expression for coefficient of friction

*March 19, 2013 by shashi ranjan*

**math**

A.) write the rational expression as an equivalent expression whose denominator is the given polynomial. 1.) 6/7x^2y = ________/49x^3y^2 B.) perform the indicated operations, simplify if possible. 2.) x^2-3x-4/x^2-16 x x+4/3x-9

*December 6, 2015 by Allie*

**Math **

The Johnson brothers company has lost $240 for 6 straight weeks. Use integer's to write an expression to represent the total losses. Simplify the expression.

*March 14, 2017 by Tyler*