Use the trigonometric function values of the quadrantal angles to evaluate. 4 cot 270 + 2 sin 90

1c-2 m405 what values are needed to make each expression a perfect square trinomial? 32 + 2x+ 2-20x + 22+5x+

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample