Fill the missing boxes and how do you know? Triangle Mid segment Theorem

When you answer this can you explain

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?