What is the sampling method described? All cases in the target population has an equal chance of being included in the final sample and knowing that a case is included in a sample does not provide usefuly information about which other cases are included a. Stratified sampling b. Cluster sampling c. A simple random sampling d. Multi-stage sampling

In which of the situations can information about tyler be represented by the expression r+3 when r represents information about ray? check all that apply.

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3