COOLIOMARIS
25.07.2019 •
Mathematics
The width of a rectangle is 9 in. shorter than its length. the area of the rectangle is 252 in². what is the length of the rectangle?
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Ответ:
So the area = w*l = x(x+9)
=> x^2+9x=252
=> x^2+9x-252=0
=> x^2 - 12x + 21x - 252 = 0
=>x(x-12) + 21(x-12) = 0
=> (x-12)(x+21)=0
=> x = 12 or -21
but x>0
=> x = 12 in
=> width = 12 in
=> length = 12+9 = 21 inches
brainliest pls
Ответ:
Ответ:
1/8, 1/12, 1/24, 1/100, and so on there are a lot
Step-by-step explanation: