If X and Y are any sets, which of the following exactly expresses what it means for X ⊆ Y to be false? There is an element in Y that is not in X. No element in X is in Y. There is an element in X that is not in Y. No element in Y is in X. Let A = {n ∈ Z | n = 5r for some integer r} and B = {m ∈ Z | m = 20s for some integer s}. Determine which of the following statements are true and which are false. (Enter TRUE if the statement is true, and enter a number that could be used as the basis for a counterexample if the statement is false). (a) A ⊆ B = (b) B ⊆ A =

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.

probably .5

i can on others if necessary.

the correct answer would be:

220 centimeters

to get this you can use the pythagorean theorem

hope this

step-by-step explanation: