Ajogger ran 3 miles due east of his house. then he ran 5 miles at a heading of 30 degrees east of north (or 30 degrees ne). how far is he from his house after running 8 miles?

Having a hard time understanding this question (see attachment).

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

In an isosceles triangle, the vertex angle is 112 degrees. what is the measure of each base. a.34 b.24 c.44 d.54