lizzyhearts
21.02.2020 •
Mathematics
A force of 10 lb is required to hold a spring stretched 4 in. beyond its natural length. How much work W is done in stretching it from its natural length to 6 in. beyond its natural length? W = ft-lb
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Ответ:
D
Step-by-step explanation:
A system of equations with no solution means the lines are parallel and never intersect.
The only graph showing a possible set of parallel lines is D