Multiply.(x + 9)(x - 9)
A. x2 + 18x - 81
B. x2 - 81
C. x2 - 18
D. x2 - 18x - 81
Answer: B
Mathematics
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Provide an appropriate response.Which is the better series discount, 15/30 or 15/15/15? Explain.
What will be an ideal response?
Mathematics
Find the real solutions of the equation.
= -2
A. {32} B. {-33} C. {33} D. {-32}
Mathematics
Solve.|x| ? 6.9
A. [-6.9, 6.9] B. (-?, -6) ? (6, ?) C. (-?, -6.9) ? (6.9, ?) D. (-?, -6.9] ? [6.9, ?)
Mathematics
Check the following addition. If the answer is incorrect, give the correct answer.
10,653
A. Correct B. Incorrect; should be 10,563 C. Incorrect; should be 10,553 D. Incorrect; should be 10,413
Mathematics