Brian and Marquise are saving money. Brian has saved $20 and saves $3 per week. Marquise has saved $10 and saves $5 per week. After how many weeks will Brian and Marquise have saved the same amount of money?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =