Showing posts with label Arithmetic. Show all posts
Showing posts with label Arithmetic. Show all posts

Saturday, November 23, 2013

Fractions


If somebody could please help me on a college algebra problem. I need to simplify this problem :
5/6*(2/3-1/6)+7/18
I started out by reducting it to
(4/6 - 1/6)
5/6*3/6+7/8 than somehow got
15/6+7/8
but than i got stuck.
So could somebody please help me and show me how to do this?
That'd be great. Thank you! :)

%285%2F6%29%2A%282%2F3-1%2F6%29%2B7%2F18
%285%2F6%29%2A%284%2F6-1%2F6%29%2B7%2F18
%285%2F6%29%2A%283%2F6%29%2B7%2F18
%285%2F6%29%2A%281%2F2%29%2B7%2F18
5%2F12%2B7%2F18
%285%2F12%29%2A%283%2F3%29%2B%287%2F18%29%2A%282%2F2%29
15%2F36%2B14%2F36

29%2F36

:)

Monday, July 8, 2013

How do I evaluate this equation? -50+(-7/9)+35+(-11/9)=

We actually evaluate expressions and solve equations (in case you need to know for future reference). So we are just writing what simpler quantities have the same value as our expression until we cannot find a simpler one. 
-50+(-7/9)+35+(-11/9)= 
-50+35 -7/9 -11/9 = 
-15 - 18/9 = 
-15 - 2 = 
-17 


:)

Wednesday, May 8, 2013

If 10 is divided by a number and the result is 30. What is the number?


If 10 is divided by a number and the result is 30. What is the number?

a divides b if and only if ax = b so
10x=30 means x=30/10 = 3

:)

2/5 divided by 16/30




First let's reduce:
%0D%0A%282%2F5%29%2F%2816%2F30%29 becomes %282%2F5%29%2F%288%2F15%29

then we convert to multiplication by inverting the divisor:

%0D%0A%282%2F5%29%2A%2815%2F8%29%0D%0A%0D%0A

or

%0D%0A%282%2A15%29%2F%285%2A8%29%0D%0A

Factor before we multiply...

%0D%0A%0D%0A%281%2A3%29%2A%281%2A4%29%0D%0A
which is 3/4

:)

If the product of two whole numbers is 36, what is the greatest possible sum that the number can have?



Your Answer:
The divisors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. We can see that when paired properly the pair with the greatest sum is 36+1=37

Sunday, April 28, 2013

what are real numbers?

Real numbers are the numbers that belong to the set of Real numbers. Every rational number and irrational number is a real number. If you can graph a number on the number line then it is a real number.