Factor completely. x2 - 400 (x + 20) (x - 20) 0 (x + 4)(x + 100) 0 (x + 25)(x - 16) (x - 50) (x +8) plz​

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Y=x+2 4x+3y= -36 system of equation