Simplify the expression. If any variables exist, assume that they are positive.2
+ 2
A. 14x
B. 14
C. 2
D. 7
Answer: B
Mathematics
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Calculate using proper order of operations.2.8 + (14.2 - 12.9) × 8.6
A. 71.18 B. 112.02 C. 13.98 D. 35.26
Mathematics
Write the expression as a product of a whole number and a power of 10. Use an exponent to represent the power of 10.30,000,000,000
A. 3 × 108 B. 3 × 1011 C. 3 × 1010 D. 3 × 109
Mathematics
Solve the equation by completing the square.9x2 + 2x - 7 = 0
A. 
, 1
B. 
, -1
C. 
, -1
D. No real solution
Mathematics
Perform the matrix operation.Let C = 
and D = 
. Find C - 4D.
A. 
B. 
C. 
D. 
Mathematics