Tuesday

June 28, 2016
Number of results: 17,648

** Mrs.SueALGEBRA order of operation problems**

Can you please check if i have these right? 3 + 15 - 5 x 2 = 8 5 x 6 + 2 x 4 = 38 48 / 8 -1 = 5 68 - 12 / 2 /3 = 66 6 (2 + 7 ) = 54 25 - (6x4) = 1 3 [ 9 - (6 -3)] -10 = 8 60 / (3 +12) = 4 4-2 + 6 x 2 = 14 18 / (5 -2) = 6 16 +24 / 30 -22 = 5 2[4 (9 -7 ) + 1 ] = 18 (8 / 8 + 2 + ...
*September 22, 2011 by MARKO*

**history**

What was the secret CIA operation to overthrow the Cuban Government called? Operation Seagull The Bay of Pigs operation Operation Mongoose Order 632 I think its operation mongoose?
*November 28, 2011 by Anonymous*

**math**

Mrs. Cindy needs to order new balls for the school students to use at recess. She asks the students what balls she should order. One-third of the students want Mrs. Cindy to order soccer balls. One-third of the students want Mrs. Cindy to order basketballs. One-sixth of the ...
*May 22, 2012 by gary*

**algebra 1A**

on the order of operation, do I not put these answers as well as do the grouping? what about evaluate all powers before other operation? multiply & divide in order from left to right. add & subtract in order from left to right. Are thses correct?
*September 17, 2009 by Lea*

**Math**

I am doing my math homework and I am confused. Please help solves these questions and tell me what operation I should use? Is it order of operation or? 1)simplify8x8-8x5+7 2)simplfiy5-6x10-16 3)simplify 4x(4+2)/(1+2)
*August 26, 2013 by Jackey*

**math**

Mrs Smith is having a party . She has 24 students . She estimates each student will eat 3/8.How many pizzas should Mrs. Smith order?
*February 3, 2016 by Lucy*

**language arts**

which of the following passages from Johnny tremain is most useful in helping you determine what type of person mrs. lap ham is? A. "My!" said Mrs. Lapham, "that's the worse anything I had imagined. Now isn't that a shame!" B. When Mrs. Lapham came down to start breakfast, she...
*December 9, 2014 by Anonymous*

**math**

which of the following are binary operation.justify your answer. (i) the operation . defined on Q by a.b =a(b-a) (ii) the operation . defined on [0, pi] by x.y = cosxy also,for those operation which are binary operations,check whether they are associated and commutative .
*March 27, 2016 by gourav bhardwaj*

**math**

Which of the following are binary operation.justify your answer. (i) the operation . defined on Q by a.b =a(b-a) (ii) the operation . defined on [0, pi] by x.y = cosxy also,for those operation which are binary operations,check whether they are associated and commutative .
*March 28, 2016 by gourav bhardwaj*

**WW2**

The evacuation of BEFs & France and Belgium forces from Dunkirk is know as Operation Dynamo. Was this name given after the operation or during the operation?
*December 17, 2007 by Gina*

**health**

Help need with scenario what reflects quality practice in palliative care? caro has noted that mrs camillero's nausea and vomiting has increased. she reports and decuments her obwervation and adds that mrs camillero has lost further weight and has increased problems with ...
*November 15, 2012 by jessica*

**Math**

I need help with a few problems. Please help. Perform the indicated operation. -13 - (-22) _______________ -11 - (-11) A)9/22 B) 450 C)-13/-11 D)Undefined Multiply (4)(–5)(10). Find the reciprocal of (-1/5) (15) Find the receiprocal of (-1/3)(9/2)(6) Perform the indicated ...
*February 22, 2009 by Sadie*

**physics**

Mrs. Meissner is taking her dog Cooper for a walk. Cooper stops to sniff a tree stump and Mrs. Meissner has to exert a force of 148 N on Cooper's leash (held 35 angle above the horizontal) in order to get him to move 2.0 m away from the tree stump. Calculate the work donw by ...
*November 11, 2014 by Sunny*

**Math problem**

Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give $21,000 in exchange for 1/3 of the stock. The $21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share of stock. How much of...
*October 27, 2012 by Bob*

**Math problem**

Mrs. Jones owns 4/7 of the stock in a small business and Mrs.Brown owns the rest. Mrs. smith agrees to give $21,000 in exchange for 1/3 of the stock. The $21,000is to be divided between Mrs. jones and Mrs. Brown so that all three will now have equal share of stock. How much of...
*October 29, 2012 by Kevin*

**math**

Five members of a family are standing in line at a carnical ride.A girl is at the front and an adult is at the back. Tom is 3rd in line.Which list could be the order of the line from first to last? A.Gina,Paul,Mrs.Moore,Tom,Mr.Moore B.Paul,Mr.Moore,Tom,Gina,Mrs.Moore C.Gina,...
*February 27, 2012 by Colton*

**world history**

Re: Industrial Revolution Apart from external problems including urban crowding, insanitation, pollution, and social and order problems, what may have also been (2) problems created by industrialization/urbanization during this time?
*February 9, 2008 by hellga*

**Reading**

Maya Angelou's - I Know Why the Caged Bird Sings is a poem I need help Please anyone 1. Why is Marguerite often embarrassed when Mrs. Flowers visits? 2. What is the relationship between Momma and Mrs. Flowers? 3. What does Mrs. Flowers teach Marguerite about uneducated people...
*June 17, 2011 by Billy*

**Algebra**

Order of Operation help
*August 25, 2010 by Vannesa*

**Algebra**

-3+5(-6)-[8-6*7)-4(13-5)]-3(-8-10) Order Of operation
*January 13, 2011 by Anonymous*

**math**

Order of operation (2×3+7^2)-10
*September 24, 2013 by Gio*

**Math**

What are the steps of order of operation?!
*September 26, 2009 by :)help please*

**Math**

order of operation (100-7 x 2+3) /10
*March 17, 2015 by Kathy*

**Math**

Our teachers are having a toy drive. Mrs. A collected 10 more toys than Mr. B. Mrs. C collected twice as many toys as Mr. B. Mr. D collected 3 less than Mrs. C. Mrs. E collected 50 more than Mrs. A. Together they collected 487 toys in all and gave them to another teacher. How ...
*December 13, 2007 by Brandon*

**Math algebra 1A**

Can someone tell me if these answers are correct please? 1. what are the steps of the order of operation? do all operations within grouping symbol first. evaluate all powers before other operations. multiply & divide in order from left to right. add & subtract in order from ...
*September 17, 2009 by Lea*

**Math**

mrs walker and mrs thomson share 4.27kg of cherries in the ratio 2 : 5. how much cherries must mrs thomson give to mrs walker so that both of them will have the same amount of cherries?
*May 8, 2016 by Anonymous*

**statistics**

At a local high school students were randomly assigned to one of two math teachers- Mrs smith and mrs jones. After the assignment, Mrs Smith had 30 students and mrs jones had 25 students. at the end of the year each class took the same standardized test. mrs smiths students ...
*March 27, 2012 by Anonymous*

**Literature - short story**

In "A Pair of Silk Stockings," the silk stockings are a symbol of a)Mrs. Sommers's inability to handle money. b)Mrs. Sommers's lack of concern for her children. c)Mrs.Sommers's selfish needs. d)Mrs.Sommers's desire for attention.
*July 12, 2008 by Janelle*

**The Short Story Part 2**

In a "Pair of Silk Stockings",the silk stockings are a symbol of? A.Mrs. Sommers's inability to handle money. B.Mrs. Sommers's lack of concern for her children. C.Mrs. Sommers's selfish needs. D.Mrs. Sommers's desire for attention.
*September 17, 2011 by Angie*

**english**

In "A Pair of Silk Stockings," the silk stockings are a symbol of A. Mrs. Sommers's inability to handle money. B. Mrs. Sommers's lack of concern for her children. C. Mrs. Sommers's selfish needs. D. Mrs. Sommers's desire for attention.
*February 25, 2008 by lisa*

**math**

why is it important to use the order of operation in mathmatics
*August 27, 2007 by bob*

**math**

use order of operation to simplify 24+20DIVIDED BY 4-(3TIMES2)
*April 8, 2015 by daverion franklin*

**4th Grade Math**

At Mrs. Livingston's favorite grocery store, oranges are sold in bags of 10 and grapefruits are sold in bags of 6. Mrs. Livingston wants to buy an equal number of oranges and grapefruits. What is the smallest number of each fruit Mrs. Livingston needs to buy in order to have ...
*November 13, 2008 by Isabel*

**math**

use the orden of operation and the digit 4 four time to write problems that have the following answers 44
*October 1, 2012 by kelly*

**quantitative methods for business**

Cress Electronic Products manufactures components used in the automotive industry. Cress purchases parts for use in its manufacturing operation of different suppliers. One particular supplier provides a part where the assumptions of the EOQ model are realistic. The annual ...
*July 19, 2013 by trai*

**math**

could somebody tell me the answer or order of operations to this calculation. 3cos(2 x 2) thanks. I assume you meant 3cos(2x²) pick your x square it multiply it by 2 take its cosine multiply by 3 press the = sign on your calculator after each step to overwrite any build-in ...
*May 12, 2007 by r. giggs*

**pre algebra HELP**

Can someone help me with this? I have to use order of operation with it to -12/3x(-8+(-4^2) -6)+2 My answer: -6 Is this correct???
*September 25, 2015 by Crystal X-luel*

**math**

Name: Barbara Dillon Date: July 18 2010 1. Divide 90÷18 =5 Answer is 5 2. Place the following set of numbers in ascending order. 22, –7, 8, –4, 12, –1, 14 Ascending order : -7, -4, -1, 8, 14, 22 3. Add 4. Subtract 5. Divide -18÷ -9 = 2 6. Evaluate Absolute value of [-14] is 14...
*July 18, 2010 by barbara*

**Grammer ~CHECK MY WORK PLEASE~**

Which of the following sentences is correct? a) Mr. and Mrs. Smith goes on vacation. b) Mr. and Mrs. Smith has gone on vacation. c) Mr. and Mrs. Smith have gone on vacation. ********** d) Mr. and Mrs. Smith is going on vacation.
*February 6, 2014 by Jenny*

**Math**

a. Evaluate the following. Remember to use the order of operation 16 ٪ (-2) • (-4) 23 + 4 b. Explain the steps taken
*November 6, 2008 by Terry*

**P6 maths **

Mrs Raja and Mrs lee have some eggs to sell. If mrs raja sells 30 eggs per day and mrs lee sells 15 eggs per day , mrs lee will still have 610 eggs left when mrs raja has sold all her eggs . If mrs lee sells 30 eggs per day and mrs raja sells 10 eggs per day , mrs lee will ...
*September 19, 2015 by Ellie*

**math**

Ihave to evalaute expressions can someone tell me which whay is the correct way. 15+ 20 ÷ 5 Is 15 + 4= 19 or 5 ÷ 5=9 210-5 x 30 Is it 210-150=60 or 205 x30=61590 Have you heard of BEDMAS? it shows the correct order of operation in arithmetic B-brackets first E-exponents D M...
*April 27, 2007 by lacy*

**7th grade math**

place the operation signs (+,-,x, divide) in the order that makes each sentence true 18__6__2=15
*September 4, 2007 by Marcus*

**math**

Hi! I am trying to solve an order of operation question would you please check my answer... 36+9/3*5 I soved it to equal 51 9/3=3 3*5=15 36+15=51 Thanks for your help!!
*January 6, 2008 by Ashley*

**pre- algebra**

Use the digits 1-9 in order. Insert operation signs and grouping symols to get a value of 100.
*September 8, 2008 by Maddy*

**need help math**

a. Evaluate the following. Remember to use the order of operation 16 ٪ (-2) • (-4) 23 + 4 b. Explain the steps taken
*November 6, 2008 by terry*

**advanced algebra**

The mean test scores with standard deviations of four English classes are given below. Class Mean Standard Deviation Mrs. Jones 89 1.9 Mrs. Rijo 82 1.4 Mr. Phan 73 3.4 Mrs. Scott 90 6.1 Which statement is most likely to be true?
*September 22, 2014 by nautica*

**com 200**

Kyle has struggled to feel comfortable in science classes with labs since his junior year of high school, when a solution he was working with ignited. He was always cautious with chemicals but his lab partner that year enjoyed seeing what would happen when he mixed random ...
*June 15, 2014 by elizabeth*

**biology**

Genetic question Both Mrs. Smith and Mrs. Jones had babies the same day in the same hospital. Mrs. Smith took home a baby girl, whom she named Shirley. Mrs. Jones took home a baby girl, whom she named Jane. Mrs. Jones began to suspect, however, that her child and the Smith ...
*March 15, 2008 by deb*

**Chemistry**

I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, ...
*April 15, 2012 by Samantha*

**Chemistry**

I need help with this in order to correctly complete my other related problems. Thank you so much in advance =) Arrange the following 0.1 M solutions in order of increasing pH and state why you placed each solution in that position: NaCH3COO, HCl, HCN, NaOH, NH3, NaCN, KNO3, ...
*April 15, 2012 by Samantha*

**Maths**

An operation produces (A-1)/A from a fraction A=m/n, where m is not equal with n and m is not zero. If the initial value of A is 22/47 and the operation is repeated 2012 times, the final output is a/b. What is a and b?
*November 9, 2013 by CHRIS*

**7th grade math**

I need help solving the equation {5x[(4+9)-2]+3}/2= PLEASE DONT GIVE ME THE ANSWER WITHOUT GIVING ME THE ORDER OF OPERATION.
*December 10, 2008 by keke*

**math**

please help me to perform the indicated operation.15-20/(3)(5)-15 You need additional parentheses or brackets to clarify the order of operations. For example, 15-{20/[(3)(5)]}-15 = 20/15 = 4/3 (15-20}/[(3)(5])-15 = -15 1/3 15-[20/(3)](5)-15 = 100/3 (15-20)/[(3)(5)-15] = -...
*April 23, 2007 by carmen*

**Pre-Algebra 7th**

What does 20 divided by 4 minus 5 plus 12 equal? I'm trying to understand the order of operation. I think the answer might be -12. Is this correct?
*September 23, 2008 by Laura*

**Math**

Order of Operations... I have a question on my homework... It's order of operations Need specific problems?
*October 12, 2009 by Easton*

**English**

1. May I take your order? 2. Would you like to order now? 3. Will you order? 4. Order, please. 5. Please order your food. 6. Are you ready to order? 7. Do you want to order? 8. Why don't you order? 9. How about ordering? 10. What do you think of ordering? (In a restaurant, can...
*June 11, 2014 by rfvv*

**ENGLISH**

Please read for errors and correct them. Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process your application as ...
*February 24, 2011 by Angel*

**English Now**

Correct any errors found.Thank you! Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process your application as quickly...
*February 24, 2011 by angela*

**7th grade math**

The question is simplify -9=1(36divided by 2 x3-4) I did -9+1(18x3-4) _9+1(54-4) -9=1(50) -9+50 41 Is this correct I did this with a friend and we both got different answers. Maybe I di the wrong order of operation?
*November 12, 2012 by EN*

**U.S. History (Check, Please!) (Ms. Sue)**

1. What two major decisions did the Allies make at Casablanca? A: At Casablanca, the Allies decided to increase the bombing of Germany and attack the Axis on the island of Sicily. 2. What conditions had to be met before Eisenhower could order D-Day to begin? A: Before ...
*January 10, 2016 by Victoria*

**math**

Mrs. Healthy walked along a running track at 2400 m/h. She took 4 min more than Mrs Wise to walk the entire length of the track once. If the track is 800 m ling, Mrs Wise's average speed was ____ m/min.
*January 30, 2015 by Rella*

**Reading**

I Know Why the Caged Bird Sings ok i got the first too who wants to help with this please i love yall forever 3. What does Mrs. Flowers teach Marguerite about uneducated people? 4. What does Marguerite learn when she listens to Mrs. Flowers read A Tale of Two Cities? 5. What ...
*June 17, 2011 by billys back*

**math115**

add -57+(-22)=-79 place numbers in acsending order 25,-13,8,-2,13,3,18=-13,-2,3,8,13,18,25 perform the indicated operation -21-(-9)/-21-(-21)=-12/-42 add -3/5+(8/35)=13/35 subtract -2.3-(-8.8)=6.5
*October 16, 2009 by p*

**math115**

add -57+(-22)=-79 place numbers in acsending order 25,-13,8,-2,13,3,18=-13,-2,3,8,13,18,25 perform the indicated operation -21-(-9)/-21-(-21)=-12/-42 add -3/5+(8/35)=13/35 subtract -2.3-(-8.8)=6.5
*October 16, 2009 by p*

**math**

with clear illustrations and examples explain how arithmetic and geometric progression can be used to solve problems related to a)construction of business b)banking business c)production/operation function
*December 11, 2010 by shadrack*

**programming**

I am in IT/210 and am having problems with the entire class. But what I am stuck on is as follows: Consider the following statement where X is an integer test score between 0 and 100. input X if (<0=X and X<49) output = "you fail" else if (50 <=X and X < 70) output...
*April 7, 2010 by Sandy*

**Math**

Hi I am not good with math. Please tell me how to differentiate mixed numbers, order of operation,subtraction, divide and multiplication etc. Thanks!
*September 14, 2012 by Leah*

**PreCalculus II**

perform the indicated operation (3sinx-2)(sinx+1) I need someone who can help me to understand what I am supposed to be doing with this problem, a step by step would be increasingly helpful so that I can apply it to other problems like this.
*January 30, 2013 by Amber Lance*

**algebra**

write in simplest form 1/10 / 1/4 they way you typed the problem illustrates well why it is so important to use brackets to show the precise order of operation. I will assume you meant (1/10) ÷ (1/4), if so then it would be (1/10)(4/1) =2/5
*April 25, 2007 by Tony*

**Math**

The operation § associated to any number means “divide the number by 3”. Is the set of integers paired with the operation § a mathematical system?
*June 10, 2012 by Gisvet*

**operation managment **

Garden Variety Flower shop uses 625 clay pots a month. The pots are purchased at $2 each. Annual carrying costs per pot are estimated to be 15 percent of cost, and ordering costs are $125 per order. The manager has been using an order size of 1,500 flower pots. There are 4 ...
*April 16, 2015 by mike john*

**englisg IV**

Why does mrs. higgins believe that higgins' experiment will cause problems for liza? is it because higgins will fall in love with her
*December 5, 2009 by Danesa*

**Algebra**

I am in 5th grade and we are to find out who invented the order of operation. I understand how to use it and found web sites, but I am unable to locate who invented it.
*November 27, 2011 by Beau*

**math**

Peform each indicated operation by using LCD and simplify the result. Can you please show me the steps on how you got the answer because I don't understand how to these problems. Thank you. y+2 over y^2+2y+4 + 1 over y-2 z-3 over z^2+z-6 + 2z+1 over z-2
*April 28, 2010 by Bradley*

**science**

Mrs leuenberger ran the same marathon but since her husband was hunting and she couldn"t find a babysitter she had to carrY her two daughter in her arms they weighs 40pounds and 55 pounds mrs leuenberger weights 145pound (butyou didnt hear that from me) How much work and power...
*October 24, 2009 by Keria *

**math**

The holiday dinner is at the Milton’s house this year. Mrs. Milton will do most of the cooking. 5. Cooking time for a turkey is determined using the rate of 1/3 hour per pound. Mrs. Milton figures she will have at most four hours to cook the turkey. What is the largest turkey ...
*October 2, 2011 by Jab*

** math help **

Mrs. Williams is going to purchase a plastic cover for her outdoor fish pond. The area of the fish pond is 25 m2. However, she must purchase a cover that is 12% more than the pond area in order to cover the entire edges of the pond. The plastic cover costs $4.75 per square ...
*January 18, 2016 by jhon *

**Science**

Could you please help me with this question; Scientists in the future hope to land a mannea spacecraft on Mars in order to survive on this planet problems associated with lack of air, water, food and shelter must be faced. Select 2 of these problems and describe how you think ...
*June 20, 2007 by Kiran*

**math**

the pass code to mrs.kyles alarm system is 6 digits.each can be from 0 - 6 and can only be used once.how many different combinations can mrs.kyle come up with?
*January 20, 2009 by lisa*

**Math 7 - Extra Credit Project**

Which source that tells how to do order of operation step by step. I'm making a booklet explain how to do it. I'm also going to make it pretty and creative.
*December 29, 2011 by Lauren *

**math**

Mrs leuenberger ran the same maraton but since her husband was hunting and she couldnt find a babysitter she had to carry her two daughter in her arms They weigh 40 pounds and 55 pounds Mrs Leuenberger weighs 145 pounds How much work pound did Mrs Leuenberger expend if she ran...
*October 25, 2009 by sandy*

**Math (Algebraic Manipulation)**

An operation produces A−1/A from a fraction A= m/n, where m ≠ n and m ≠ 0. If the initial value of A is 24/47 and the operation is repeated 2012 times, the final output is a/b, where a and b are coprime positive integers. What is a+b?
*May 12, 2013 by Tom*

**algerbra**

mrs. johnson is 3 times as old as her son. ten years agoe she was 5 times as old as her son was then. what is the two equations for this problem? let x = son's age and y = Mrs. Johnson's age. ============================ y=3x is one equation. 10 years ago Mrs. Johnson' age was...
*December 4, 2006 by shay*

**Math**

Can you please answer me that question in order of operation : 4 to The 3 power Times 2 plus 145 minus 9 . I think the answer is 200. Plz answer
*November 7, 2015 by Saman*

**English**

I'm a little confused about making something possessive. For example, if I were to write America's history is fascinating. would that be correct, or would "Americas", or "Americas'" be right? Also, suppose you wanted to say that a dog belonged to Mrs. Ness (or anything ending ...
*March 4, 2008 by Jenna*

**Algebra HELP:(**

The total cost of purchasing from a mailorder catalog, y, is a function of the cost of the items purchased, x. In addition there is a fixed shipping charge of 2.75 per order, and sales tax is 8%. Write an equation that shows the relationship between the quantities. I have ...
*June 1, 2010 by bart*

**scientist**

Mrs. leuenberger ran the same marathon but since her husband was hunting and she couldnt find a babysitter she had to carry her two daughters in her arms they weigh 40pounds and 55pounds Mrs Leuenberger weighs 145 pound (but you didnt hear that from me)How much work and power ...
*October 25, 2009 by Barb *

**Math (Algebraic Manipulation) Help me please**

An operation produces A−1/A from a fraction A= m/n, where m ≠ n and m ≠ 0. If the initial value of A is 24/47 and the operation is repeated 2012 times, the final output is a/b, where a and b are coprime positive integers. What is a+b?
*May 13, 2013 by Tom*

**Math**

Given P (x) = x-1/ 2x-3, Find P (-2) The notation P(-2) for your given P(x) means that wherever you see an x, replace it with -2, then evaluate so P(-2) = (-2-1)/-4-3) = -3/-7 = 3/7 (The way you wrote your expression, according to the order of operation, would be P(x) = x - (1...
*July 24, 2007 by Nicole Maberry*

**probability**

The probability that patient recovers from a delicate heart operation is 0.9. What is the probability that exactly 5 of the next 7 patients having this operation survive?
*August 30, 2010 by jim*

**math**

Whatwould be the answer 3+9+6+52x963+??? The answer depends upon where you put the parentheses. The order of operation makes a big differnece The answer depends upon where you put the parentheses. The order of operation makes a big differnece I agree with drwls...... But, ...
*February 23, 2007 by Crystal*

**Business**

Thomas Kratzer is the purchasing manager for the headquarters of a large insurance company chain with a central inventory operation. Thomas’s fastest moving inventory item has a demand of 6000 units per year. The cost of each unit is $100.00, and the inventory carrying cost is...
*September 20, 2010 by Jackson*

**math**

In your opinion, how is the order operation used to solve equation. exponets, groups, multiplication, division, addition, subtraction. This allowes you to get the same result every time..... I hope this helps :) I searched Google under the key words "math operation order" to ...
*March 19, 2007 by cheryl*

**law Ms Sue please re check my answer**

i have to pick from the following informed consent disclosure substituted consent Regaurding the question a minor needs an operation the parent consent to the operation
*November 14, 2007 by Anonymous*

**Math**

A binary operation * on the set of real numbers is defined by a*b= a+b-ab for a,b, c is belongs to R. i) show that the operation is associative. That is, (a*b)*c=a*(b*c) for all a,b,c belongs to R. ii) Find the value of -5*8 and also the value of (4*6)*5/13.
*May 2, 2016 by Ilukui*

**statistics**

The survival rate during a risky operation for patients with no other hope of survival is 81%. What is the probability that exactly four of the next five patients survive this operation?
*November 4, 2014 by kalia*

**statisciscal inference**

The probability that a patient recovers from a delicate heart operation is .0.9. What is the probability that exactly 5 of the next 7 patient having this operation survive?
*October 9, 2015 by Anonymous*

**Algebra**

An operation is commutative if you can change the order of the numbers involved without changing the result. Addition and multiplication are both commutative. Subtraction is not commutative: 2 - 1 is not equal to 1 - 2. So my question is what’s the difference between 2 - 1 and...
*December 12, 2010 by CC*

**math**

Please help me do these problems. I dont understand how to do weighted averages. Mrs. Gleason invested a portion of 32000 dollars at 9% interest and the balance at 11% interest. How much did she invest at each rate if her total income from both investments was 3200
*November 9, 2010 by brian*