Atrain travels at a constant speed of 35 mi/h. how long does it take the train to travel 490 mi? enter your answer in the box.

answer ? h

The formula for the volume of a rectangular prism is v = lwh. a rectangular prism has a length of 2y 3 and width of 5y. the volume of the prism is 20y 10 + 70y 4 . what is the height of the prism? show your work.

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of