Which of the following is a perfect square trinomial? a) 4x2 – 20x - 25
b) x2 - 16
c) x2 - 8x + 16
d) x2 + 4x + 36

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

In a rectangle klmn, km = 6x + 16 and ln = 49. find the value of x