In a survey of 480 students, 253 indicated that play the piano, 268 indicated that they play the harp and 73 indicated they play the piano and the harp. How many students surveyed play at least one of these instruments mentioned here?

What expression is equivalent to 1/2(2+3x-6)

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

Select the two pairs of figures that are similar.