Ahelicopter is 19 meters above the top of a canyon wall is it goes up five meters what is the new position of the helicopter related to the top of the canyon wall

step-by-step explanation:

there were only 2 presidents that were under the age of 45. theodore roosevelt, and jfk, that makes 5%

answers

\3. yes the presentation (i.e. odd numbers being written as differences of two squares) is possible for all odd natural number however the presentation may not be unique. for example,  57=112−82=292−28257=112−82=292−282.

\4. 2 can't be written as a difference of two squares because 4-1=3 and 1-1=0 and the difference of squares grows to integers larger that 3.

can i get some in proving questions 1 and 2?