CoolStuffYT

7x-2x=0.6+0.15

5x=0.75

Can you solve from here?
 

You are very welcome!

:P

Here's something that you need to know to solve this problem: It's a Cyclic Quadrilateral.

Cyclic Quadrilaterals are basically quadrilaterals that can be inscribed in a circle.

In Cyclic Quadrilateral LMNP, angle L + angle N = 180, and angle M + angle P = 180. That's just the property of one.

Angle M = arc LP + arc NP / 2, or 123 degrees.

So angle P = 180-123 = 57 degrees.

You are very welcome!

:P

x-5-(2-x) = -3

You can use the distributive property on the -(2-x) so that -1*2 = -2 and -1*-x=x, so -(2-x) = -2+x

x-5-2+x = -3

2x-7=-3

Can you solve it from here?

You are very welcome!

:P

We can see that it goes down by 2 each time.

We can write an equation.

-2x+12 is the equation where x is the place of the number (so if x = 1, then it will be the 1st number)

Then -2(20)+12 = -28, or answer C

I'm not sure about this, because i'm not sure if DA and EB are diameters of the circle or not. If they are, then I can answer.

However, if we assume that EB is the diameter...

Arc EB is 180 degrees (the arc that goes through points D and C).

All together, then angle DOC (where O is the center) + angle BOC + angle EOD = 180

We already have 90+52 which is 142

180-142 = 38

So EOD is 38 degrees.

Now, arc AD is 180 degrees (again assuming that AD is the diameter)

So simply do 180-38 which is 142

So arc EA is 142.

You are very welcome!

:P

I just graphed it, you can find it out!

73,786,976,294,838,206,464

4b+19 / 6b+11 = 76/100

\(\frac{4b+19}{6b+11} = \frac{76}{100}\)

\(400b+1900=456b+836\) by cross-multiplication

\(1064=56b, b = 19\)

You are very welcome!

:P

You can see the middle line, or median, is at 13.

If it's more than 13, it's anything to the right of the median.

The median is the middle value, so 50% is to the left and 50% to the right.

Therefore, there were 50% of 220, or 110 people.

Well that's just x = y and the graph of that is y=x