160 cm because if I am correct, then two of the sides are labeled as 10 cm. Which means that they are both the same measurement.
Answer: x=15
Explanation: you can set 2x+100 = 5x+55 because they are corresponding interior angles.
Work:
2x+100 = 5x+55
2x+100-5x = 55
2x-5x = 55-100
-3x = -45
divide by -3 to cancel the negative and get x by itself
x = 15
Hope this helped! :)

now, it doesn't give us nice looking integers, so let's plug that into the quadratic formula.


<span>Since these are done in order, and without replacement:
Lila selecting black = 7/12 (7 black ribbons out of 12 ribbons total)
Jessica *then* selecting a green ribbon = 5/11 ( 5 green ribbons left out of 11 ribbons left)
Chance of this specific event = (7/12)*(5/11) = 35/132</span>Mike <span>· 6 years ago</span>