Answer:
80
Explanation:
[tex]\frac{4x^{9} y^{-4}}{ x^{8} y^{-6} }[/tex]
x = 5 and y = 2
[tex]\frac{4(5)^{9} (2)^{-4}}{ (5)^{8} (2)^{-6} }[/tex]
Solve all the exponents first:
[tex]\frac{4(1953125)(.0625)}{(390625)(.015625)}[/tex]
Multiply.
[tex] \frac{488281.25}{6103.5156}[/tex]
Divide.
80
