Simplify the expression: 15 x7 y6 3 x4 y3 a) 5 x4/7 y1/2 b) 5 x7/4 y2 c) 5 x10 y9 d) 5 x3 y3

Abcd is a parallelogram. the diagram is not drawn to scale. if m

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?

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.