Un conjunto de 10 000 observaciones tiene una distribución normal con media de 450. Si 1700 de ellas están comprendidas entre 450 y 460. ¿Cuál es la desviación
estándar?

15/16 as a decimal rounded to the nearest hundredth

Ineed i been stuck on this question since yesterday

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)