1350 good cds 110 bad ones what is the probability of getting all 4 chosen good cds

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

Summarize the work of famous environmental scientists of the past.

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.