Simplify the expression. Assume that all variables represent nonnegative real numbers.
- 3
- 2
A. -4
B. 
- 7
C. 5
x
D. -4
Answer: A
Mathematics
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The figure below is a square ABCD with center O. (M, N, P, and Q are the midpoints of the sides.)
The image of A under a 90° clockwise rotation with center O is
A. M. B. B. C. D. D. C. E. none of these
Mathematics
Write as ordinary numbers.1.455 × 10-5
A. 0.0001455 B. 0.000001455 C. -145,500 D. 0.00001455
Mathematics
Solve the equation.
= 
A. 
B. 
C. 
D. 
Mathematics
Perform the operations. [8z + (-7z + 7)] + [-(-8z - (-10 + 3z)) - 6z]
A. 14z + 3 B. 6z - 3 C. -4z + 17 D. -16z + 17
Mathematics