Ineed becca paddles a boat from the south bank of a stream to the north bank.
she paddles at arate of 8mph. the streamis flowing west at arate of 6 mph. what is becca's actual velocity?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Find the x-intercepts of the parabola withvertex (1,1) and y-intercept (0,-3).write your answer in this form: (x1,if necessary, round to the nearest hundredth.