It would be 0.81 because she got 81/100 right. Hope this helpz..
Answer:

Step-by-step explanation:
We have the equation of the position of the object

We need to solve the equation for the variable a

Subtract
and
on both sides of the equality


multiply by 2 on both sides of equality


Divide between
on both sides of the equation

Finally

The interjection in this sentence is Yikes!
Interjections are used to show some kind of emotion, and often end with an exclamation mark.
It becomes a vertical line, because it is sideways, and if it is rotated 90 degrees, then it becomes vertical
hope this helps, and sorry if im wrong
For the graph of y = -8 the line is horizontal, which means the slope = 0. A parallel line has the same slope so one equation could be y = 2. A perpendicular line has an opposite slope so since our slope = 0 the opposite of that slope is

which a line that is perpendicular to y = -8 could be x = -3. Also notice that these two lines form a 90 degree angle.