Find the prime factorization of the number.21
A. 3 ? 9
B. 3 ? 7
C. 3 + 7
D. 3 ? 8
Answer: B
Mathematics
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Use a day counting table to find the exact number of days from the first date to the second date. Assume the year is not a leap year unless otherwise indicated.May 2 to June 12
A. 41 B. 122 C. 71 D. 38
Mathematics
Solve by the substitution method.-0.5x + 0.3y = -2.3-0.7x - 0.1y = -2.7
A. {(x, y)| -0.5x + 0.3y = -2.3} B. {(4, -1)} C. {(-1, 4)} D. ?
Mathematics
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.ln (x - 6) + ln (x + 1) = ln (x - 15)
A. {3} B. {-3} C. {3, -3} D. ?
Mathematics
Find the domain of the function.
A. {x|x ? 0} B. {0} C. all real numbers D. {x|x ? 0}
Mathematics