hectictar

How can you not post new questions when you just posted this one? lol

The blue line just means that a new post was made to that thread.

It only shows up on threads that you have looked at before.

And only mods have the power to check mark a question. A mod has to personally check every answer that gets check marked to make sure it is right and then give it the check mark.

I'm pretty sure your other question got deleted because you put a cuss word in it.

Are you the person who keeps asking about dropping 2 rocks and wanting to know info about the center of mass? If so, an answer was posted to it just recently.

perimeter of a rectangle = length + length + width + width

72 = 2w + 2w + w + w

72 = 6w

12 = w

width = 12 feet

length = 2 * w = 24 feet

If you are asking about the calc on this website, there are 2 bubbles at the very bottom left. Just select degrees or radians. I think it is set to degrees by default.

(On the home page it is set to degrees by default, but when I open it while in the forum it is set to radians...huh that's weird...)

2w + 3 < 11

2w < 11 - 3

2w < 8

w < 8 / 2

w < 4

There is a not so pretty drawing of the number line. :)

one: \(\sqrt{79}-5x=x-11\)

  or

two: \(\sqrt{79-5x}=x-11\)          ?

Yes, in every right triangle

tan(an angle) = (length of side opposite) / (length of side adjacent)

I also have run into that page a few times. I was wondering if it was just me too.

f(x) = a(x - h)² + k

h controls shifting left and right. We want to make a - 2 shift.

k controls shifting up and down. We want to make a + 3 shift.

a controls "steepness" basically. We just want normal steepnees of 1.

f(x) = 1(x - -2)² + 3

f(x) = (x + 2)² + 3

This gives a really good idea of what a, h, and k do: