46
Departments / Re: Published paper in USA
« on: April 07, 2014, 07:26:33 PM »
great
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47
Departments / Re: math problem of the day(another)
« on: April 07, 2014, 07:25:40 PM »
Explanation: Half of the grade levels, the 3rd, 4th, and 5th grades, have a homeroom class size 3/2 the size of the other grades. With 3 homeroom classes instead of 2, the 5th grade has 3/2 the students as the 3rd and 4th grades. This means that the fifth grade has 9/4 as many students as 1st and 2nd grades, as well as the Kindergarten level. Each of the grades K-2 will have populations of 48 students: 108(4/9); each of the grades 3-4 will have populations of 72: 108(2/3), giving us a total of 396 (3[48] + 2[72] + 108 = 12[12] + 12[12] + 9[12] = 33[12]).
48
Departments / Re: math problem of the day(another)
« on: April 07, 2014, 07:23:35 PM »
An elementary school has 6 grade levels: Kindergarten, 1st grade, 2nd grade, 3rd grade, 4th grade, and 5th grade. Each grade has 2 homeroom classes, except for the 5th grade, which has 3 homeroom classes. If the homeroom class sizes in Kindergarten, 1st grade, and 2nd grade are 2/3 the size of the homeroom class sizes for the other grades, how many students attend the school if the fifth grade has 108 total students?
49
Departments / Re: Life of Pi
« on: April 07, 2014, 07:09:22 PM »
Pi is the secret code in Alfred Hitchcock’s Torn Curtain and in The Net starring Sandra Bullock
50
Departments / Re: Life of Pi
« on: April 07, 2014, 07:06:32 PM »
In the Greek alphabet, π (piwas) is the sixteenth letter. In the English alphabet, p is also the sixteenth letter
51
Departments / Re: math problem of the day(another)
« on: September 22, 2013, 01:23:57 PM »
When positive integer x is divided by 5, the remainder is 3; and when x is divided by 7, the remainder is 4. When positive integer y is divided by 5, the remainder is 3; and when y is divided by 7, the remainder is 4. If x > y, which of the following must be a factor of x - y?
ans: 35
ans: 35
52
Nutrition and Food Engineering / John Venn's biography
« on: August 04, 2013, 03:54:44 PM »
please see the The following link to learn about John Venn, one of the pioneer mathematician of the history
http://www-history.mcs.st-and.ac.uk/Biographies/Venn.html
http://www-history.mcs.st-and.ac.uk/Biographies/Venn.html
53
Nutrition and Food Engineering / Re: Dynamic uses of Prawn shell
« on: August 04, 2013, 03:24:13 PM »
thanks for this post
54
Nutrition and Food Engineering / Re: Some of the unknown information of the human body !
« on: August 04, 2013, 03:23:18 PM »
thanks for this post
55
Nutrition and Food Engineering / Re: 7 ways exercise keeps you young
« on: August 04, 2013, 03:21:57 PM »
thanks for this link
57
Nutrition and Food Engineering / Re: exercise your brain
« on: August 04, 2013, 03:20:02 PM »
cos(x°) = adjacent/hypotenuse = 20/45 = 0.444...
x° = cos-1(0.444...) = 63.6°
x° = cos-1(0.444...) = 63.6°
58
Nutrition and Food Engineering / Re: Benefits of Aloe Vera
« on: August 04, 2013, 03:18:38 PM »
thanks
59
Nutrition and Food Engineering / Re: New Potato Salad
« on: August 04, 2013, 03:18:03 PM »
nice post
60
Nutrition and Food Engineering / Re: exercise your brain
« on: August 04, 2013, 03:17:10 PM »
Town B is further east than town A, it is 20 miles north of town A and the distance AB in a straight line is 45 miles.
What is the bearing of town B from town A?
What is the bearing of town B from town A?