What is the surface area of the pyramid?

620 square ft
230 square ft
340 square ft

The sum of two numbers is 86, and their difference is 20. find the two numbers

What is the radical expression that is equivalent to the expression 27 1 over 5?

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