Find polar coordinates of the given point. Express the answer in degrees 
or radians 
as indicated.Radians
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.In a chemical reaction, the rate at which the amount of a reactant changes with time is proportional to the amount present, such that 
, when t is measured in hours. If there are 
of reactant present when t = 0, how many grams will be left after 
? Give your answer to the nearest tenth of a gram.
A. 3.7 g B. 0.1 g C. 11.2 g D. 7.5 g
Answer the following statement(s) true (T) or false (F)
1. The Parallel Postulate is required to prove that the sum of the angles in a triangle is 180°. 2. If AB ? PQ,?BAC ? ?QPR, and ?ACB = ?PRQ, then ?ABC ? ?PQR. 3. The diagonals of a rhombus are congruent. 4. If the diagonals of a rhombus are 10 cm and 24 cm, then its perimeter is 52 cm. 5. The diagonals of a trapezoid form four triangles, one pair of which is always congruent.
Solve using Gauss-Jordan elimination. 6x + 4y = 0 4x + 2y = -2
A. (3, -2) B. (-2, -3) C. (-2, 3) D. No solution
Solve the problem.The chairlift at a ski resort has a vertical rise of 2500 feet. If the length of the ride is 1.3 miles, what is the average angle of inclination of the lift (to the nearest tenth of a degree)?
A. 24.4° B. 15.4° C. 18.4° D. 21.4°