Answer:
Exactly, It would be this: 8.99543738355
. But rounded is 9 or 8.99
+ 19 on both sides, -19 becomes 0, 1 becomes 20 x=20
We want to calculate the following

Using the properties of exponents, we have that

So we have

So, if factor 10^-4 on the right side, we have

Note that

Then,

So we have that
The answer is 6
Explanation:
1 cm : 20 feet
y cm : 120 feet
(We will use cross multiplication)
20y = 120*1
20y/ 20 = 120/20. (left-side: the 20’s will be cancelled)
y= 120/20
y= 6