Question

plz answer step by step and fast

Answer 1

Ans:- a. 16/9

         b. 6075

         c. 21952

Step-by-step explanation:

a. $(-3)^{2}$÷$(\frac{-9}{4} )^{2}$

   = 9 ÷ $\frac{81}{16\\}$

   $=\frac{9}{\frac{81}{16\\} }$  

   $= 9 *\frac{16}{81}$

   $=\frac{16}{9}$

b. $\frac{3^{5} *5^{4}*27}{5^{2}*3^{3} }$

 $=\frac{3^{5} *5^{2}*5^{2} *3^{3} }{5^{2} *3^{3}}$   [∵ From cancellation]

 $=3^{5}*5^{2}$

 = 243×25

 = 6075

c. $\frac{14^{2} *7^{3}*2^{6} }{4*7^{2}}$

$=\frac{14^{2} *7^{2}*7*2^{2}*2^{4} }{2^{2} *7^{2}}$

$={14^{2} *7*2^{4}$   [∵ From cancellation]

= 196 × 7 × 16

= 21952

I think it helped you ..... Plzz follow me for more answer and mark this answer as brainliest....