Answer:

And 
Step-by-step explanation:
For this case we assume that for the first square we have the following dimensions:

And we know that:

And the area for the second square would be:

And we know that the sum of areas is 65 so then we have this:

And replacing we got:


We can divide the last expression by 2 and we got:

And we can factorize the last expression like this:

And we have two solutions for
and we got:

Since the length can't be negative we have this:

And 
Answer:
y=-5*x+5
Step-by-step explanation:
the critical point are (5,0) and (0,1). the equation of the system is y=a*x+b. you substite y as 5 and 0 and x as 0 and 1 and you get it
Answer:
7 Rows of 9
Step-by-step explanation:
Planting 7 rows of 9 would leave you with no more tomato plants, and 18 more cabbage plants left over
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