The distance a spring will stretch varies directly with how much weight is attached to the spring. if a spring stretches 11 inches with 75 pounds attached, how far will it stretch with 65 attached? round to the nearest tenth of an inch.

Direct variation involves ration and proportions, so 

you need to set up the proportion:

11 / 75 = x / 65
 
Cross multiplying:

75x = 11*65

x = (11*65)/75

Solving, we get x = 9.533, 

which rounds off to 9.5

Therefore, the spring will stretch up to 9.5 inches with 65 attached.

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