Classify the angle as acute, right, obtuse or straight

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

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

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.