Graph the function.y = - 
cos 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use a sum-to-product identity to rewrite the expression.sin 
- sin 
A. 2
B. 2
C. 2
D. 2
Mathematics
Solve the problem.The following graph shows data for a recent train ride from New York to Toronto. At what rate did the train travel?
A. 60 miles per hour B. 50 miles per hour C. 65 miles per hour D. 120 miles per hour
Mathematics
Find the least common multiple.28, 35
A. 63 B. 35 C. 140 D. 980
Mathematics
Let (m × n) denote a matrix of size m × n. Find the size of the following product, or state that the product is not defined.(4 × 1)(4 × 1)
A. 1 × 4 B. 4 × 4 C. 4 × 1 D. not defined
Mathematics