Which expression has the same value as 3y+2x a. 3y+(-2x)
b.-2+3y
c.2x-(-3y)
d.-3y-2x

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.

Lisette takes an ela exam and got 16 out of 27 questions correct. what percentage of the questions did lisette get correct?