As an estimation we are told £3 is €4. Convert £63.20 to euros. 2 decimal places is preffered :)

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab

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?