Evaluate the expression for the given values.a2 - b2, if a = 8 and b = 2
A. -60
B. 12
C. 68
D. 60
Answer: D
Mathematics
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Use the vectors in the figure below to graph the following vector. 
3w 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.In a chemistry class, 9 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. 4.5 liters B. 5.5 liters C. 9 liters D. 3.5 liters
Mathematics
Subtract.-6.833 + 6.790
A. -0.043 B. -13.523 C. 46.396 D. -13.623
Mathematics
Solve the formula for the specified variable.A = 
h(b1 + b2) for b1
A. b1 = 
B. b1 = 
C. b1 = 
D. b1 = 
Mathematics