Find the exact value. If the value of the function is not defined, write undefined.cot(-810°)
A. -1
B. Undefined
C. 
D. 0
Answer: D
Mathematics
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Multiply.(39)(52)
A. 2028 B. 2128 C. 2038 D. 2018
Mathematics
Find projv u.v = 3j, u = 4i + 3k
A. 0
B. 
j
C. 
i + 
j
D. 
i + 
j + 
k
Mathematics
Write a system of equations for the problem, and then solve the system.Two cars leave a city and head in the same direction. After 5 hours, the faster car is 35 miles ahead of the slower car. The slower car has traveled 255 miles. Find the speeds of the two cars.
A. 44 mph and 51 mph B. 70 mph and 77 mph C. 53 mph and 60 mph D. 51 mph and 58 mph
Mathematics
Simplify the expression.9a - 3a + 6
A. 12a + 6 B. 12a C. 6a + 6 D. -6a + 6
Mathematics