Osuma de bani a fost cheltuita astfel : in prima zi 10 la suta din suma in a 2-a zi 30 la suta din rest si au mai ramas 40 lei . aflati suma initiala . [ probleme cu procente ]

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion

Factor the polynomial. b^2 + 4b + 4

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?