For positive acute angles A and B, it is known that tan A = 4/3 and cos B = 5/13 Find the value of cos(A + B) in simplest form.

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

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