Sara and her sister leave home at the exact same time. Sara walks north at a rate of 4 miles per hour. Her sister walks east at a rate of 3 miles per hour. What is the straight line distance between the sisters two hours after they leave each other?> After two hours, the straight line distance between Sara and her sister is

Which of the binomials below is a factor of this trinominal? x^2-13+30

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling