Respuesta :

RyanLeung
a.
[tex]1.89 \div( 2 \times \frac{1}{4} )[/tex]
b.
[tex]weight \: per \:cm = \frac{9}{15} = 0.6[/tex]
e.
Let the number be x
[tex] \frac{75}{85} = \frac{x}{200} [/tex]
Others I am not really sure.