1La altura de un péndulo gigante en metros por encima del suelo está dada por la función abajo, donde t es el tiempo en minutos, según se observa en la gráfica. ¿Cuál es la altura mínima del péndulo? H (t) = 1.5 cos (t) + 2 in Time

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

Coral reefs,temperate grasslands, and kelp forests are all in danger.