A recipe requires 1 cups of milk. Marianna has 1 cups of milk and would
like to use as much as she can. How many
times can she make this recipe?
3 times
4 times
5 times
6 times

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?

Use the squared identities to simplify sin^2x cos^2x

With this question, the answer with the red arrow is incorrect!