Answer:
To find the value of missing exponent, we have to split the number which is in other side of equal sign (which is not having power) as the multiple of base of the missing exponent.
On both sides, powers have the same base, so their exponents must be equal.
Step-by-step explanation:
<h3>Problem 1:</h3>
Write the missing exponent:
25=5^x
Let x be the missing exponent.
To find the value missing exponent, we have to split the number which is in the left side as the multiple of the base of the missing exponent.
That is,
25=5*5 or 5^2
Now,
5^2=5^x
Powers have the same base so their exponent must be equal.
Hence the missing exponent is 2
to get the inverse of any expression, we start off by doing a quick switcheroo on the variables and then solve for "y".

Answer:
m = 6
Step-by-step explanation:
2km=2000m
25m=25m
2500cm=25m
3000mm=3m
Hence the longest is 2km=2000m