Decide whether the equation is or is not an identity.tan A + tan B = 
A. Identity
B. Not an identity
Answer: A
Mathematics
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Determine the center (or vertex if the curve is a parabola) of the given curve.4x2 - y2 - 8y = 12
A. (0, -4) B. (-2, 0) C. (2, 0) D. (0, 4)
Mathematics
Solve the problem.In a chemistry class, 5 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 1.5 L B. 5.0 L C. 2.5 L D. 3.5 L
Mathematics
A rectangular parking lot with a perimeter of 442 feet is to have an area of at least 8050 square feet. Within what bounds must the length of the rectangle lie? ?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve by isolating the absolute value and using the absolute value property.
= 5
A. 
B. 
C. 
D. 
Mathematics