Is anyone able to see if there is a counterexample for the following argument in logic?
all a are b
no b are c
thus, some c are not a

Np4=12np2 with clear explanation.

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air