d answers as d is correct
<h3>
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<span>B. Dr. Appiah’s patients’ ages vary less than do Dr. Singh’s patients’ ages.
C. Dr. Cantwell’s patients’ ages and Dr. Singh’s patients’ ages vary about the same amount.</span>
<u>Answer:</u>
<em> 107</em>
<u>Step-by-step explanation:</u>
Sum of all angles is 180
12+BC+61 = 180
73+ BC = 180
73 - 73 + BC = 180 - 73
BC = 107
Answer: the correct answer here would be C
Step-by-step explanation: because there is everything except a gap
5 because you have to divide -15 by -3 and yu get 5