You would first write a proportion like this:
15 over 20 = x over 16
Cross multiply 15 times 16 and 20 times x.
15 times 16 = 240. 20 times x = 20x.
Divide both sides by 20.
240/20 = 12
x = 12
The slide tree is 12 feet tall.
Rewrite it in the form a^2 - b^2, where a = 5x and b = 8
(5x)^2 - 8^2
Use the Difference of Squares; a^2 - b^2 = (a + b)(a - b)
<u>= C. (5x - 8)(5x + 8)</u>
5x + 2 -x = -4x
4x +2 = -4x
2 = -4x -4x
2 = -8x
x = - 1/4
hope this helps
105/1000 is the answer :)
Keurig takes about 58 days 15 hours and 30 mins. So we have to turn this into hours
So 58 days = 1392
Now we add + 15
-------
1407