What was the effect of the American Revolution on the numbers of free African Americans in the former colonies?

1) \( \sqrt{2}+3 \sqrt{2}+5 \sqrt{2} \) 2) \( \sqrt{48}-\sqrt{24}= \) 3) \( \sqrt{2}+\sqrt{109}= \)

Vlad spent 20 minutes on his history homework and then completely solved \( x \) math problems that each took 2 minutes to complete. What is the equation that can be used to find the value of \( y \), the total time that Vlad spent on his homework, and what are the constraints on the values of \( x \) and \( y \) ? \( y=2 x+20 ; x \) is any integer greater than or equal to 0 , and \( y \) is an integer greater than or equal to 20 . \( y=2 x+20 ; x \) is any real number greater than or equal to 0 , and \( y \) is any real number greater than or equal to 20. \( y=20 x+2 ; x \) is any integer greater than or equal to 0 , and \( y \) is an integer greater than or equal to 20. \( y=20 x+2 ; x \) is any real number greater than or equal to 0 , and \( y \) is any real number greater than or equal to 20.

Si \( f(x)=\left\{\begin{array}{cc}-x+1, & x<0 \\ 0, & x=0 \\ x+1, & x>0\end{array}\right\} \) y \( g(x)=x, x \in R \) el valor de \( (f-g)(x) \) en \( x=-1 \) es:

(2) Sobre una carta marina a escala 1: 40,000 se mide una distancia de 8 cm entre dos islas, ¿Qué distancia hay entre ambas islas en la realidad?

Diberikan fungsi \( g ; g(x)=\frac{x}{1-2^{x}}-\frac{x}{2} \) untuk setiap \( x \) merupakan bilangan real tak nol. Tentukan semua nilai yang mungkin dari \( \frac{g(-x)-g(x)}{g(23)} \) Perhatian pecahan berikut.