A hexagon has interior angles the measure 127, 85, 121, 135, and 139 find the measure of the remaining angle. Please help i need ths asap

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

What numbers are included in the set of integers? what numbers are not included?