The decay of 192 mg of an isotope is given by a(t)= 192e-0.015t, where t is time in years. find the amount left after 55 years. round your answer to the nearest whole number.

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

Which expression converts 45 degree to radians

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