Use the net as an aid to compute the surface area of the triangular prism

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Consider circle o, where and . m∠bpd °. °.

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?