You survey 284 students about whether they use a laptop or tablet. One hundred twelve of the students use a laptop, with 49 of them also using a tablet.
Ninety-seven of the students do not use a laptop or a tablet. Organize the results in a two-way table. Include the marginal frequencies.

i would love   to but there is no graph shown

step-by-step explanation:

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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?