30 POINTS, PLEASE HELP A 25 gram sample of a substance that's used for drug research has a k-value of 0. 1208. N = Noe No = initial mass (at time t = 0) = mass at time t k - a positive constant that depends on the substance itself and on the units used to measure time t = time, in days. Fine the substances half life, in days, round your answer to the nearest tenth​

Drag and drop the answers into the boxes to complete this informal argument explaining how to derive the formula for the volume of a cone. since the volume of a cone is part of the volume of a cylinder with the same base and height, find the volume of a cylinder first. the base of a cylinder is a circle. the area of the base of a cylinder is , where r represents the radius. the volume of a cylinder can be described as slices of the base stacked upon each other. so, the volume of the cylinder can be found by multiplying the area of the circle by the height h of the cylinder. the volume of a cone is of the volume of a cylinder. therefore, the formula for the volume of a cone is 1/3 1/2 1/3πr^2h 1/2πr^2h πr^2h πr^2

4. find the geometric mean of 4 and 12. 24 8

Select the correct answer. in the figure, angle k measures 45°. what is the measurement of angle c? a. 38° b. 45° c. 90° d. 98°