Elena wants to add (2.3 x 10^5) + (3.6 x 10^6) and writes (2.3 x 10^5) + (3.6 x 10^6) = 5.9 x 10^6. Explain to Elena what her mistake was and what the correct solution is.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?