Answer:
width= 25 inches
length= 34 inches
Step-by-step explanation:
width x length = 850 in²
w x (9+ w ) = 850 in²
9w+ w²=850 in²
9w + w²-850 =0
solve for w using quadratic formula
w= {-9 ±√(9)²-4(1)(-850)} ÷2(1)
w= 25; -34
The width is 25 because measurements can't be negative.
width= 25
length= 25+9=34
