- The symbol of an element represents one atom of that element. Example: Na=1 atom A subscript is a number written at the lower right corner behind the symbol of an element. If there is more than pne atom of the element, then a subscript is used to indicate the number of atoms. Example: H_(2)=2 atoms A subscript outside a bracket multiplies all the elements inside the brackets. Example: Mg_(3)(PO_(4))_(2) )
- Let f(x)=7-sqrt(x^(2)+1) and g(x)=x-4 . Then (f@g)(2)= (f@g)(x)=
- What is the simplest form of (5n^(14))/(20n^(7)) ? A. 4n^(2) B. 4n^(7) C. (n^(2))/(4) D. (n^(7))/(4)
- Find the slope " 1.) " (8","-4)","(5","-1) m=(y_(2)-y_(1))/(x_(2)-x_(1))
- The line through (2,y) and (1,-4) is perpendicular to a line with slope (1)/(2) . Find y .
