Given T(2,5,4) and M(3,1,-4), find the ordered triple that represents TM. Then find the magnitude of TM

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Which of the following three dimensional figures has a circle as it’s base

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected