16 is 8% of what number?

9 is 15% of what number?

6 is 50% of what number?

30 is 60% of what number?

127 is 25% of what number?

21 is 10 1/2% of what number?

(x-5)1/2+5=2 what is possible solution of this equation

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)