Emma claims that if two lines r and s are parallel, and if t is perpendicular to r, t must also be perpendicular to s. Is this true? Explain.

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?