Saturday

October 22, 2016
Total # Posts: 17

**math 211(linear algebra)**

uppose that the sequence x0, x1, x2... is defined by x0 = 4, x1 = 2, and xk+2 = 4xk+1+5xk for k≥0. Find a general formula for xk. Be sure to include parentheses where necessary, e.g. to distinguish 1/(2k) from 1/2k. .

*December 7, 2014*

**calculus**

use L'Hopital's Rule to evaluate lim (4x(cos 8x-1))/(sin 8x - 8x) as x->0

*November 9, 2014*

**math**

A bag contains 11 red balls, 9 blue balls and x yellow balls. The probabilty of choosing a yellow ball at random is 1/6. What is the probability of not getting a blue ball.

*November 19, 2013*

**please help me for chemistry**

Account for the following observation: 1)Ammonia is exceptionally soluble in water. 2)Hydrogen fluoride ,HF, has a higher boiling temperature than methane, CH4. 3)The boiling temperature of ammonia (NH3)is -33˚C but that of phosphine (PH3) is -88˚C

*January 22, 2013*

**need help for chemistry **

Account for the following observation: 1)Ammonia is exceptionally soluble in water. 2)Hydrogen fluoride ,HF, has a higher boiling temperature than methane, CH4. 3)The boiling temperature of ammonia (NH3)is -33˚C but that of phosphine (PH3) is -88˚C

*January 21, 2013*

**overland high school**

the gravitional force exerted on objects on the moon is about 1/6 that of earth. if an object weighs 240 newtons on the moon, on earth it would weigh _________.show work

*March 2, 2011*

**statistics**

An insurance company wishes to examine the relationship between income (in $,000) and the amount of life insurance (in $,000) held by families. The company drew a simple random sample of families and obtained the following results: Family(Income)(Amount of life insurance) A 50...

*February 9, 2010*

**statistics**

The tourist industry is subject to enormous seasonal variation. A hotel in North Queensland has recorded its occupancy rate for each quarter during the past 5 years. These data are shown in the accompanying table. Table 1: Occupancy rate Year 2004 2005 2006 2007 2008 Quarter 1...

*February 9, 2010*

**statistics**

International Pictures is trying to decide how to distribute its new movie ‘Claws’. ‘Claws’ is the story of an animal husbandry experiment at the University of Southern Queensland that goes astray, with tragic results. An effort to breed meatier chickens ...

*February 9, 2010*

**Maths**

Can someone help me with this... Mr and Mrs Lim went shopping with a total of $712.50. After buying some items each, the amount Mrs Lim had left was 4 times the amount she spent and the amount Mr Lim had left was trice the amount he spent. Both of them had a total of $555 left...

*January 22, 2010*

**maths**

Pls help me with this... Helen had $140 more than Tom. Tom spent as much as Helen at a shopping centre. How much did Tom have at first if he spent 0.8 of his money while Helen spent 2/3 of hers?

*January 21, 2010*

**Maths**

A sum of money was shared among Amos, Benny and Cathy. Amos received 1/4 of the sum. Benny received 2/5 of the remainder and Cathy received the rest. As a result, Cathy received $150 more than Benny. (a) What is the amount received by Amos? (b) Find the sum of money?

*January 15, 2010*

**maths**

Peter had 3/4 as much money as James at first. After receiving $12 each, Peter had 3/5 as much money as James. How much money did Peter have at first?

*January 8, 2010*

**Maths**

Many Thanks for your answer

*March 29, 2008*

**math**

Doreen and Raju had the same amount of money. Lihua and Raju had $3406 altogether. If the three of them had $5010 altogether, how much more money than Doreen did Lihua have?

*March 28, 2008*

**maths**

Mr.Wang spent $40 for 5 picture cards, 2 note book and a vase. The cost of 1 picture card and the vase was $16. The cost of 1 picture card and 1 note book was $10. What was the cost of the vase?

*September 1, 2007*

**Maths**

Alvin and Eddy shared some stamps. Rachel has 2/9 of the total stickers. If Serene has 42 stickers, how many stamps do they have altogether? not enough information. Did you switch names? Where do Alvin and Eddy come in?

*August 14, 2007*

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