Find the exact value. Do not use a calculator.cot (- 
)
A. 0
B. -1
C. 1
D. undefined
Answer: A
Mathematics
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Perform the indicated operations.-4.2 + (-8.4) + (-8.3)
A. 4.1 B. -12.5 C. 4.3 D. -20.9
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Find the derivative of the function.y = (x + 1)2(x2 + 1)-3
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Find B to the nearest 0.1° if a = 235 ft and b = 767 ft. 
A. 73.0° B. 17.8° C. 72.2° D. 17.0°
Mathematics
Solve the problem.A student takes out two loans totaling $12,000 to help pay for college expenses. One loan is at 10% simple interest, and the other is at 7% simple interest. The first-year interest is 
. Find the amount of the loan at 7%.
A. $5000 B. $7000 C. $490 D. $500
Mathematics