good afternoon everyone i am bored and can a boy talk to me plz it can be a girl too but im bored abyont wanna talk

What is the first step of an indirect proof of a number that is divisible by two

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot