It takes Sam 3 hours to repair a roof, however Tim takes 4 hours to do the same thing, if working together how long would they take?

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

in mathematics, a constraint is a condition of an optimization problem that the solution must satisfy. there are several types of constraints—primarily equality constraints, inequality constraints, and integer constraints. the set of candidate solutions that satisfy all constraints is called the feasible set.

hoped i'm right lol

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.