Which numbers are imaginary numbers? there may be more than one correct answer. select all correct answers.
a) )/(2))
b) \sqrt(-7)
c) -\sqrt(4)
d) \sqrt(-8)
e) )/(7))
e) −3

Can someone me out here number 4 plz

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .