Urgent the earth completely rotated on its axis once every 24 hours a) how long does it take for it to rotate 310 degrees? b) how long does it take to rotate 5 radians? c) the diameter of the earth is approximately 7920 miles how far will a point on the equator rotate in two hours? show all work. give answers to the nearest hundredth include the units in your response. , i really need with this. i’ll give brainliest to best answer!

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