To practice for an ironman competition john swim 0.86 kilometers each day for three weeks how many meters did he swim in those 3 weeks

What is sin 7x/4 ? i need on this urgent trig

Icould really use some with this question.

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.