Write 28,000,000 in scientific notation.
A. 2.8 × 107
B. 28 × 106
C. 2.8 × 10-7
D. 2.8000000 × 107
Answer: A
Mathematics
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A. {x ? x is a real number and x ? 0} B. {x ? x is a real number} C. {x ? x is a real number and x ? -8} D. {x ? x is a real number and x ? 5}
Mathematics
Which of the following writings have teachers used to launch mathematical problem solving activities?
a. Shel Silverstein poetry b. Harry Potter c. Alice's Adventures in Wonderland d. All of the above e. None of the above
Mathematics
Solve the problem.If u = -7i - 2j and v = 5i + 7j, find u - v.
A. -13i + 5j B. -14i + 5j C. -2i + 5j D. -12i - 9j
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Use the quadratic formula to solve the equation.6x2 + 5x + 8 = 0
A. 
B. 
C. 
D. 
Mathematics