The significance of the Sheffer Stroke is that it is a "universal" operation in that all other logical operations can be built from it. a. Prove that p|q is equivalent to ¬(p ∧ q).
b. Prove that ¬p ⇔ p|p.
c. Build ∧ using only the Sheffer Stroke. .
d. Build ∨ using only the Sheffer Stroke.

y - y1 = m(x- x1)

y - (-5) = 2/3(x -0)

y + 5 = 2/3x

y = 2/3x - 5

it should be a and d. lmk if i'm wrong xd

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.