Find the exact value. Do not use a calculator.cot 570°
A. - 
B. 
C. - 
D. 
Answer: B
Mathematics
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Solve the system of equations by the substitution method.
A. (-2, 8) B. (9, -3) C. (-3, 9) D. no solution
Mathematics
A rock concert was measured to be 
watts/cm2. Find the number of decibels for the power of the sound and round it to the nearest decibel.
?
__________ dB
Fill in the blank(s) with the appropriate word(s).
Mathematics
Follow the principles of estimation to find an approximate value.Estimate by rounding to the nearest ten for the divisor and the nearest million for the dividend.
A. 114,513.5 B. 104,103.182 C. 100,000 D. 90,909.0909
Mathematics
Solve the initial value problem.
= cot x, y(-1) = 8
A. y = 
+ -1
B. y = -
+ 8
C. y = 
+ 8
D. y = 
+ 8
Mathematics