11th grade Algebra II
posted by Anonymous
Chad had a garden that was in the shape of a rectangle. Its length was twice its width. He decided to make a new garden that was 2 feet longer and 2 feet wider than his first garden. If x represents the original width of the garden, which expression represents the difference between the area of his new garden and the area of the original garden?

Reiny
original garden is (x)(2x) = 2x^2
new garden = (x+2)(2x+2) =
so difference = (x+2)(2x+2)  x(2x) 
Anonymous
wow!!! that was so fast. Thank you so much!
So the answer is 6x+4, right? 
Reiny
yes
(just happened to be on the computer) 
Anonymous
Thank you!!! :)

carl
teresa and julia are among 10 students who have applied for a trip to washington DC. Two students from the group will be selected at random for the trip. What is the probability that teresa and julia will be the 2 students selected?

keana
20%

calvin
2x5y+z=23
4x+3y5z=1
3x3y4z=9
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