Iodine-131 is used medically to study the activity of the thyroid gland. iodine – 131 has a half-life of about 8 days. this means that approximately every 8 days, half the mass of the iodine decays into another element. if a container held a mass of 64 milligrams of iodine – 131, how much is left after 40 days?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

The volume of the sun is approximately 1 × 10^18 cu km, while the volume of jupiter is approximately 1 × 10^15 cu km. which of the following is true? a. the volume of jupiter is approximately one thousand times the volume of the sun. b. the volume of jupiter is approximately one hundred times the volume of the sun. c. the volume of the sun is approximately one thousand times the volume of jupiter. d. the volume of the sun is approximately one hundred times the volume of jupiter.

Asap will give brainiest to first person to answer what is the measure of angle b in the triangle? enter your answer in the box.m∠b=