Factor the difference of two squares. Assume that variables represent whole numbers.49x2 - 9
A. (49x + 1)(x - 9)
B. (7x + 3)(7x - 3)
C. (7x + 3)2
D. (7x - 3)2
Answer: B
Mathematics
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Solve the equation.
- 
= 6
A. 
B. 6
C. 
D. 
Mathematics
Provide an appropriate response.Using a calculator, find the value of cos 195°. Round to four significant digits.
A. 0.9756 B. -0.9756 C. -0.9659 D. 0.9659
Mathematics
Round as indicated.
to the nearest thousand
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Brandon can paint a fence in 12 hours and Elaine can paint the same fence in 11 hours. How long will they take to paint the fence if they work together?
A. 5
hr
B. 5
hr
C. 5
hr
D. 11
hr
Mathematics