16) 三
D.
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Which of the choices is NOT a good example of a line of best fit?
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A)
A
B)
B
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D)
D

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

1,2,4,5,10,11,20,22,44,55,110,220

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?