The ratio of seventh graders to sixth graders on a chess team is 5 to 3. What is the ratio of seventh graders to total chess players?

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

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

Using elimination, what is -4x+2y=-12 4x+8y=-24