QS bisects ∠PQR such that m∠PQS = 2x + 1 and m∠RQS = 4x - 15. What is m∠PQR?

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

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?