The train descends at twice the speed compared to its ascent, and it travels at 2/3 of the speed uphill relative to flat terrain.
If its speed downhill is measured at 120 miles per hour, its uphill speed would be 120 divided by 2, equaling 60 miles per hour, and its speed on flat ground would be 60 divided by (2/3), simplified to (60 times 3) divided by 2, resulting in 90 miles per hour.
Consequently, for the train to cover 45 miles on flat terrain, the time required is calculated as 45 divided by 90, which is equal to 0.5 hours, or 30 minutes.
The result is 3600 cubed, which is what was originally determined.
Respuesta:
1/16 2/16 3/16 4/16 5/16 6/16 7/16 8/16 9/16 10/16 11/16 12/16
Explicación paso a paso:
Para identificar las brocas existen dos aspectos a considerar:
1.- Las fracciones que comparten el mismo denominador aumentan en orden ascendente a medida que los numeradores incrementan, lo que significa que entre
9/16 3/16 7/16 5/16 11/16 el orden sería (de menor a mayor)
3/16 5/16 7/16 9/16 11/16
2.- Fracciones con diferentes denominadores pueden convertirse a un denominador común /16 multiplicando la fracción, por ejemplo
1/4 = 1*4/4*4 = 4/16
Aplicando este método, todas las fracciones se transforman al formato mencionado previamente y se organizan
1/4 = 4/16
3/8 = 6/16
1/2 = 8/16
5/8 = 10/16
1/8 = 2/16
Por lo tanto, hay diez brocas, comenzando con 1/16 hasta la número 12 que es 12/16
Finalmente, el orden sería:
1/16 2/16 3/16 4/16 5/16 6/16 7/16 8/16 9/16 10/16 11/16 12/16
Solution:
[(2x² + 5x) + (4x² – 4x)] + 5x³ =
(2x² + 5x) + [(4x² – 4x) + 5x³]
Step-by-step breakdown:
