Question

solve the following ........... no unnecessary ans​

Answer 1

Answer:

a = 3 , b = 1 , c = 2 or,

$2^{-a}$  × $5^{-c}$ × $7^{c}$ = 7/200

Explanation

$1960 = 2^{a}$× $5^{b}$ × $7^{c}$                        _  _ _ _ _ _ _(expand the equation)

$2$ × $2$ × $2$ × $5$ × $7$ × $7$ = $2^{a}$ × $5^{b}$ × $7^{c}$

$2^{3}$ × $5^{1}$ × $7^{2}$ = $2^{a}$ × $5^{b}$ × $7^{c}$

comparing the power 2,5,and 7 on both side of equation

we Have, a = 3 , b = 1 , c = 2

Hence,

the value of $2^{-a}$  × $5^{-c}$ × $7^{b}$

$2^{-3}$ × $5^{-2}$ × $7^{1}$

1/8 × 1/25 × 7

= 7/200

please mark as brainliest

Answer 2

pls don't forget to mark it as BRAINLIEST