Use reference angles to find the exact value of the expression. Do not use a calculator.cot 570°
A. 
B. - 
C. - 
D. 
Answer: A
Mathematics
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Tell which set or sets the number belongs to: natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.17
A. whole, rational, real B. integers, rational, real C. natural, whole, integers, rational, real D. real
Mathematics
Solve the problem.There are 9 horses in a race. In how many ways can the first three positions of the order of the finish occur? (Assume there are no ties.)
A. 82 B. 508 C. 504 D. 84
Mathematics
Find an equivalent fraction with the given denominator.
= 
A. 
B. 
C. 
D. 
Mathematics
Solve the system of nonlinear equations.x2 + y2 = 42
- y = 0
A. (6, 
), (-6, - 
)
B. (6, 
), (-6, 
)
C. (6, 
)
D. No solution
Mathematics