N and n+2 because if n=1 then you do 1+2 and that equals 3. So then you have 1,3
Answer:
The trestle meets ground level at 0.875 units and 9.125 units
Step-by-step explanation:
Poorly formatted question.
The given equation is:

Required
The point where the trestle gets to the ground level
To do this, we set 
So, we have:

Multiply through by -1

Solve using quadratic formula:

Where:

So, we have:




Solve the fraction

Split


Answer:
D
Step-by-step explanation:
a=
4
a=4
I think the answer is 8.7332602....I hope I helped!