Sam is covering her rectangular pool for the winter. The area of the cover is x² + 13x + 42 ft². The length of the cover is (x +
7) feet.
A. What is the width of the cover? Make sure to include the unit of measurement.
B. How did you find the width? Explain in complete sentences.
C. If x = 4, what is the area of the pool cover?
please show your work
2 answers:
Answer:
A.....area= x^2+13x+42...factorizing= ( x+7)(x+6)
l=x+7
b=area/l=(x+6)(x+7)/(x+7)=(x+6) ft
B...its above...
C...area=lb
l= x+7=4+7=11
b=x+6=6+4=10
lb=11×10=110 ft
Answer:
(x+6) feet, 110sq ft
Step-by-step explanation:
Area = width * length = something * (x + 7)
Width = (x+6) as 6 and 7 add to 13 and times to 42.
To confirm expand (x+6)(x+7)=x^2+6x+7x+42=x^2+13x+42
(x+6) feet
4^2+13(4)+42=16+52+42=110 sqft
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