An oil company fills 1/5 hour. at this rate l, which expression can be used to determine how long it will take to fill completely?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

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

Which term describes the point where the perpendicular bisectors of the three sides of a triangle intersect?