Valor de x para el cual la expresión x+5/2-x no esta definida

Can i get some on 18,20,& 22? or one of them

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

What is the approximate value of  q  in the equation below? –1.613–1.5220.5853.079