80%, 1000-200 = 800/1000 or 80%
ANSWER

EXPLANATION
The given expression is

We remove the perfect squares under the radical sign.

We can now take square root of the perfect squares and simplify them further.

This simplifies to:

This further simplifies to:

Answer:
x=8.06
Step-by-step explanation:
find you half base and use PYTHAGORAS THEOREM to find the opposite side (x)
10. Find which one of the given fractions are value closer to 1.
First = 7/8
Second = 11/10
Let’s start solving
Let us start with the first value which is 7/8
=> 7 needs to be divided with 8
=> 7 / 8 = 0.875
Now, let’s solve the second value which is 11/10
=> same with first solution., divide 11 by 10
=> 11 / 10
=> 1.1
Thus, 11/10 is the has the nearest value to 1.
A) He wanted to create zero pairs on the left side of the equation to get a positive coefficient of x on the right side