Concentric circles are circles with the same center but different radii. Which equations represent concentric circles along with the circle shown in the graph? Check all that apply. X2 y2 = 25 (x â€"" 8)² (y â€"" 9)² = 3 (x â€"" 8)² (y â€"" 9)² = 14 (x â€"" 8)² (y 9)² = 3 (x 8)² (y 9)² = 25 (x 9)² (y 8)² = 3.

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

Shannon drove for 540 minutes. if she traveled 65 miles per hour, how many total miles did she travel?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265