The net of a square pyramid is shown below. Use a ruler to measure the dimension of the net to the nearest 0.25 inch

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?

Find the domain and range of the following function f(x) = 51x - 21+ 4

Which number line correctly shows 0.8 + 0.3?