Sonny substituted 5 for x in the proportion 16/x=48/15 and cross multiplied to get 240=240. why is this? a. because the cross sums of the proportion are equal b. because the cross differences of the proportion are equal c. because the cross products of the proportion are equal d. because the cross quotients of the proportion are equal

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.