Write the number 3.9 in the form a + bi.

A. 3.9 + 0i
B. 3.9i - 0
C. 3.9
D. 3.9i


Answer: A

Mathematics

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Divide. Express the quotient in lowest terms. ÷ 

A.
B.
C. - 
D.

Mathematics

For a person at rest, the velocity v (in liters per second) of airflow during a respiratory cycle (the time from the beginning of one breath to the beginning of the next) is given by


What will be an ideal response?

where t is the time (in seconds).
(Inhalation occurs when v > 0 and exhalation occurs when v < 0.)
Select the graph of this velocity function.

Mathematics

Find the reciprocal.

A.
B. - 
C.
D.

Mathematics

Use addition of y-coordinates to sketch the graph of the function between  and .

?

?

A. ?


B. ?

?


C. ?


D. ?

?


E. ?


Mathematics