Question

in ΔABC ,M ∈ (AB), N ∈ (AC), MN ║ BC. AM=2 cm ,AB =8 cm ,NC=7.5 cm.Calculati lungimea segmenului AN.
VA rog mult ,imi trebuie URGEEEENT

Answer 1

AM/AB=AN/AC
2/8=(AC-NC)/AC
2/8=(AN-7,5)/AC
2AC=8(AC-7,5)
2AC=8AC-60
8AC-2AC=60
6AC=60
AC=10
AN=AC-NC=10-7,5=2,5
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