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First, you convert square into multiplied by itself.(That probably sounds confusing, so I will show you an example). (9/14)² = (9/14) x (9/14)

Multiply the denominator and the numerator by themselves. E.g. (9x9)/(14x14)

Ta-da! Answer is in front of you! 81/196!

Multiply the TOP number by itself (numerator) and the BOTTOM number by itself (denominator)

ex:      3/4  ^2    =   3*3/4*4 = 9/16

~jc

Yep, Hayley......Go Girl...I know you want your points  haha

~jc

10^6 = a '1' with six zeroes afte it    1,000,000   (One million)

~jc

19 is prime ...divisible by only itself and '1'

65 is NOT prime....divisible by 5, 13

155 is NOT prime.....again divisible by 5  etc....

~jc

19 is, indeed, prime.

Initially there are 12 ball in the jar, so probability if choosing a green one is 3/12

Then there are 11 ball left in the jar so the probability of choosing a red one is 4/11

Overall the probability of choosing first green then red is the product of these two: (3/12)*(4/11) = 1/11

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The exterior angle of a regular n-sided polygon is 360°/n so the interior angle is 180°-360°/n

When n = 5 the interior angle is therefore 180°-360°/5 = 108°

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oh! Okay! I understand now! Thank you, Sir (:

6÷2(3) 
(6) ÷(2)(3) 
6÷2*3, 
or even converting the division to multiplication by a reciprocal (a legal math move) 
(6)(1 (over) 2)(3) 
are all correct ways to write this problem and mean exactly the same thing. Using pemdas, where md and as are interchangeable, we work from left to right, so (3)(3) or 
3*3= 9 
 

Start at the top and work down:

level 1:       1 block

level 2:       2 blocks    so 1 + 2 = 3 blocks in total

level 3:       3 blocks   so 1 + 2 + 3 = 6 blocks in total

...

level n:       n blocks   so 1+2+3...+n blocks in total.

Now  1+2+3+...+n = n(n+1)/2  so when n = 12   n(n+1)/2 = ?

. 

Here's part 1:

Try a similar approach on parts 2 and 3.

Here by alisa?

I know what he said....