Which of these is an example of a non-random sample?
A.
Out of all the seventh grade students in a public school district, fifteen are chosen to win a trip to a vacation destination.

B.
Airline passengers to Orlando, Florida, are asked about vacation plans.

C.
At a school assembly, five students are randomly chosen to receive free admission to a theme park.

D.
Registered voters in Arizona are surveyed to determine if they have relatives in Florida.

Franco wants to double the volume of the cone. what should he do?

The sides of a parallelogram are 24cm and 16cm. the distance between the 24cm sides is 8 cm. find the distance between the 16cm sides

Vikram is studying the square pyramid below. on st to find the surface area of the pyramid, in square inches, vikram wrote (33.2) (34 ikram wrote (33.2)(34.2)+43(34.2)(284) what error did vikram make? o he used the same expression for the area of all four lateral faces. he used the wrong expression to represent the area of the base of the pyramid. o he used the wrong value as the height when he found the area of the lateral faces. he used an expression for surface area that only finds the total area of three faces.