20=4s+5/2p
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Answer:
11. a
12. c
13 a
Step-by-step explanation:
Answer:
AB = 60
Step-by-step explanation:
Given AC = 75 and AB = 4BC, then
AB + BC = AC, that is
4BC + BC = 75
5BC = 75 ( divide both sides by 5 )
BC = 15
Thus
AB = 4BC = 4 × 15 = 60