exam Maths Puzzle Numerical Ability

Sam invested $7,500 for one year, part at 12% annual interest and the rest at 10% annual interest. His total interest for the year was $890. How much money did he invest at 12%.

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exam Other Question
(Use 6 steps)
Given: angle A and angle B, and Angle c and angle D are complementary angles.
measure of angle B = measure of angle D
Prove: angle a is congruent to angle C.

Pl 13.28 Ahospital emergency room analyzed n=17,664 hourly observations on its average occupancy rates

using six binary predictors representing days of the week and two binary pred