Question

help me fast in mathl​

Answer 1

Step-by-step explanation:

c) is the correct option.

Answer 2

$ans. \: \frac{4}{5} \times ( \frac{ - 6}{7} \times \frac{8}{9} )= ( \frac{4}{5} \times \frac{ - 6}{7} ) \times \frac{5}{9} \\ \\ for \: associative \:multiplicative \: property \\ a \times (b \times c) = (a \times b) \times c \\ \\ let \: a = \frac{4}{5} , b = \frac{ - 6}{7} \: and \: c = \frac{8}{9} \\ \\ then ,\frac{4}{5} \times ( \frac{ - 6}{7} \times \frac{8}{9} )= ( \frac{4}{5} \times \frac{ - 6}{7} ) \times \frac{5}{9} \\ \\ hence, \: option \: (a). \: \frac{4}{5} \times ( \frac{ - 6}{7} \times \frac{8}{9} )= ( \frac{4}{5} \times \frac{ - 6}{7} ) \times \frac{5}{9}\: is \: correct$