x = 9
The sides on the left are proportional and can be used to find the sides on the right.
Since 72/8=9, 56/8 must equal 3x-20
![3x - 20 = 7 \\ 3x = 27 \\ x = 9](https://tex.z-dn.net/?f=3x%20-%2020%20%3D%207%20%5C%5C%203x%20%3D%2027%20%5C%5C%20x%20%3D%209)
The smallest degree of rotation is called the angle of rotation. This can be calculated by dividing the angle of full rotation by the number of sides of a regular polygon. Since a full rotation is 360 degrees, we divide 360 by 24.
Thus, the smallest rotation needed to map the polygon back to itself is 15 degrees.
Since both numbers are under the square root sign they can be combined under 1 sqrt sign.
![\dfrac{\sqrt{120}}{\sqrt{30}}=\sqrt{\dfrac{120}{30}}](https://tex.z-dn.net/?f=%5Cdfrac%7B%5Csqrt%7B120%7D%7D%7B%5Csqrt%7B30%7D%7D%3D%5Csqrt%7B%5Cdfrac%7B120%7D%7B30%7D%7D)
Now all you need do is perform the division under the root sign
sqrt(4) is your answer but not the final one.
2 <<<<< Answer
Answer:
Step-by-step explanation:
(-2 -2)/(8-4)= -4/4= -1
y - 2 = -1(x - 8)
y - 2 = -x + 8
y = -x + 10