20 key chains: 0.4x=50. Since they are parallel
4x+y=26 replace y with (x-4) & solve for x in this equation.
4x+(x-4)=26
4x+x=26+4
5x=30
x=30/5 <span>
x=6 answer.
y=6-4
y=2 answer.
Proof.
4*6+2=26
24=2=26
</span>26=26 <span>Y=x-4
</span>
Answer:
degrees
Step-by-step explanation:
Angles on a straight line add up to 180 degrees.
Thus, 
Divide both sides by 4:
Answer:
C
Step-by-step explanation:
Since CB is a tangent to the circle then ∠ ABC = 90°
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, thus
AC² = 5² + 8² = 25 + 64 = 89 ( take the square root of both sides )
AC = 
→ C
<span>This is just an example, and it has no copyrights. I'm sure that you can come up with one on your own since this doesn't have very many terms.
Euclid
By Vicki Young
<span>Euclid dreamed of measuring stuff, many years ago.
He wrote down all the rules for us – a method he would show.
The world seemed flat back in his day,
But all his rules still hold today.
He called his math geometry –
it’s math for you and me.
It was geometry –
measure the earth, you see.
It’s math that’s real for me
- angles and symmetry.
Postulates still are true tell us just what to do.
This much I know is true
Geometry is the math I want to teach to you!
Through the years, they added more, with each new theorem found.
All those Greeks had found the door to prove the earth was round.
This math still rules the world today,
With all the shapes along our way.
This is the math, geometry – it’s math that you can see. </span></span>
