If 19 out of 110 people chose volleyball how many people out of 330 would also

57

Step-by-step explanation:

For every 110, there is 19, for example, if there was five 110's then you would multiply 19 by 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?