Determine whether the following is a perfect-square trinomial.x2 - 20x + 400
A. Yes
B. No
Answer: B
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Find n(A) for the set.A = {x | x is a number on a clock face}
A. n(A) = 12 B. n(A) = 6 C. n(A) = 24 D. n(A) = 3
Find the domain and the range of the relation.
A. domain: all real numbers; range: y ? 6 B. domain: all real numbers; range: all real numbers C. domain: x ? 6; range: all real numbers D. domain: x ? 0; range: all real numbers
Estimate the sum or difference by rounding each number to the nearest hundred.
A. 350 B. 300 C. 400 D. 1500
Ten people are meeting at a conference. Each person is instructed to introduce herself or himself to each of the other participants at the conference. If it is estimated that each introduction should take 1.5 minutes, how much time should be allowed in the schedule for this activity?
What will be an ideal response?