The seniors on the student council bought a total of 36 plants to use in landscaping the front of the school. they bought some azaleas that cost $6 each and some lilies that cost $5 each. they spent a total of $196 on these plants. how many azaleas did the students buy?
a.) 18
b.) 16
c.) 20
d.) 5

If lmn=xyz, which congruences are true by cpctc? check all that apply

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?