18/10
9/5
Anything along those lines!
Answer:

Step-by-step explanation:
A fraction is a quantity that is not a whole number. In maths, a fraction usually has a numerator and a denominator.
The numerator is the number above. While the denominator is the number below
an example of a fraction = 
4 is the numerator while 5 is the denominator
In this question, the numerator would be the number of times she walked to school in march(16). While the denominator would be the number of school days in March

the above fraction is not in its simplest form. To express in its simplest form, divide both numerator and the denominator by 8 . this gives

That is in standard form already.
Scientific form is 8.24 * 10^-9 answer
Answer:
b = 12
Step-by-step explanation:
7b = 84
We can break down 7b as 7 x b
7 x b = 84
We divide both sides by 7:
7 x b ÷ 7 = 84 ÷ 7
b = 12
-Chetan K
Answer:
The final expression will be 
Step-by-step explanation:
We have given expression 
We know the property of exponent that when there is exponent to exponent then both exponent are multiplied with each other
So 
Now again there is property of exponent that when there is multiplication of two function then exponent will be added
So 
So the final expression will be 