To approximate the speed of a river, a circular paddle wheel with radius 0.68 feet is lowered into the water. if the current causes the wheel to rotate at a speed of 14 revolutions per minute, what is the speed of the current? express the answer in miles per hour rounded to two decimal places, if necessary. a)0.68 miles per hour b)59.82 miles per hour c)0.11 miles per hour d)0.34 miles per hour

How many $20 bills do you need to have to make $280

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?