Rational numbers are any numbers that terminate (the decimal ends somewhere)
The only set that does this is D, since
All other sets have these:
None of these terminate (the decimals goes on forever), so the answer is D
Let the length = x
2 lengths are 2x.
Then you have 400 - 2x for both widths, so the width is 200 - x.
The are if the rectangle is
y = x(200 - x)
y = 200x - x^2
y = -x^2 + 200x
Take the first derivative ans set equal to zero to find a maximum value.
y' = -2x + 200
-2x + 200 = 0
-2x = -200
x = 100
Since the side of the rectangle is 100, all sides measure 100 ft, and you have a square.
The maximum area is 100 ft * 100 ft = 10,000 ft.
Answer:
the numbers in parentheses are the values of X it wants you to plug in.
Step-by-step explanation:
for example: f(-6) = (-6)² - 3
f(2t) = (2t)² -3
