The radioactive material strontium-89 decays according to the formula A = A, e-0013, where t is expressed in days. To the nearest thousandth, how much strontium-89 will be left if
a sample of 25 grams decays for 45 days

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle