Determine whether the triangles must be congruent If so, name the postulate or theorem that best justifies your answer. If not, explain. Choose the correct answer below. O A. The triangles are congruent by AAS. O B. The triangles are congruent by SSS. c. The triangles are congruent by SAS. D. The triangles are congruent by ASA. E. The triangles are not congruent.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )