A train track through a mountain is 2200 feet long and makes an angle of 1.7° with a horizontal. What is the change in elevation from one end of the tunnel to another? PLEASE HEL

If p(a) = 0.70 and p(b) = 0.20, then a and b are independent events if

1. how do you find p(a and b) if a and b are dependent events for two or more actions, such as selecting two candies and drawing p(green, and then pink)?

The perimeter of △cde is 55 cm. a rhombus dmfn is inscribed in this triangle so that vertices m, f, and n lie on the sides cd , ce , and de respectively. find cd and de if cf=8 cm and ef=12 cm. the answer is not cd=20 and de=15. i have tried that one, it does not work.