Using the side lengths of △pqr and △stu, which angle has a sine ratio of 4/5?

a. p
b. q
c. t
d. u

Twenty percent of what number is 40?

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

Write 37/22 as a decimal rounded to the nearest hundredth.