Solve the equation for x.sin-1 
- cos-1 x = 0
A. {0}
B. 
C. 
D. ?
Answer: B
Mathematics
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Complete.8 kg = mg
A. 800 B. 8,000,000 C. 0.08 D. 0.008
Mathematics
Solve the problem.The side of an equilateral triangle is 
shorter than the side of a square. The perimeter of the square is 
more than the perimeter of the triangle. Find the length of a side of the square.
A. 25 inches B. 22 inches C. 26 inches D. 27 inches
Mathematics
Combine like terms.-7.9(3r + 10) + 7.1(7r + 7)
A. 26r - 29.3 B. -4.9r + 2.1 C. -102.7r D. 26r + 10
Mathematics
Solve the equation. Use the change of base formula to approximate an exact answer to the nearest hundredth when appropriate.10x = 0.85
A. x = log 
B. x = log - 
C. x = log 0.85
D. x = log -0.85
Mathematics