Inspirational

I got the same thing!

$\frac{1}{\sqrt{10}}$

Nice work! I guess you have that many upvotes for a reason 

Doesn't look like it, but I would just like to check.

hint:

Either:

average the solutions for x

find the vertex

Well 

your name certainly is correct then

62) Just solve the system...?

Expand:

18+3x=8x-3x

Move all x to right:

18=8x-3x-3x

Combine:

18=2x

Divide by 2:

9=x

why was the previous picture "blocked by moderator!"?

Triangle with legs 12 & 16 has a hypotenuse of 144+256=400, sqrt400=20.

Now, realize that these are similar triangles (as an exercise, figure out why!)

So, we have 20:16=x:20

Solve that.

You can factor and use the circle formula, which is:

$(x – h)^2 + (y – k)^2 = r^2$

the center (h, k) and the radius r

Hmmm

nevermind

I got it right

you can still solve if you want though :p

Ah

I feel so dum

And I think that they are the only 2 missing, right?

THHHHHT

HHHHHTT

HHHHHTH 

TTHHHHH

HTHHHHH 

THHHHHH

HHHHHHT

HHHHHHH

Yes, i think that's it.

So... $\frac{8}{2^7}=\frac{8}{128}=\frac{1}{16}$

THANQ