There are 150 fish in total. The ratio of goldfish to betta fish is 2:3. How many goldfish are there? (Please help me I’m nearly crying cause I can’t answer this question. )

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f

Can someone me find the original price? the discount is 5% and the sale price is $68.40