Which is an equivalent form of the expression 1800(1.2)–t?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.