paulitaaustin
17.09.2019 •
Mathematics
The length of a shadow of a building is 27 meters. the distance from the top of the building to the tip of the shadow is 38 meters. what is the height of the building?
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Ответ:
b-3 = 4( i-3) > b-3=4i-12 >b=4i-9
b = i+12
b=4i-9
i+12=4i-9
21=3i
i=7
b= i+12
b=7+12=19 Ben is 19 years old now