PLEASE HELP ME 50 PTS and i'll give brainliest please help me this is the video they game me to do this hw but I still don't understand it https://youtu.be/7Uos1ED3KHI

1.) 70x/100x^2 = 7/10x

2.) 16x^3/24x = 2x^2/3

3.) 7x(2x+1)/21(2x+1) = x/3

4.) 35x - 35/x^2 - 1 =  35/x + 1

5.) x + 7/x^2 + 4x - 21 = 1/x - 3

6.) x^2 - 6x + 5 = x - 5/5

7.) x^2 - 36/x^2 - 3x - 18 = x + 6/x + 3

8.) x^2 - 3x - 10/x^2 + x - 2 = x - 5/x - 1

Sonji chose pieces that can be used to construct a triangle

Step-by-step explanation:

Remember that a triangle should follow this rule:

The sum of any two of its sides should be greater than the other side.

Notice Don's wires measure does not follow that rule because 3+5=8  is smaller than the other side length: 12

Similarly Margo's wires measure does not follow the rule since 6+8=14 it is not greater than the other side whose length is 14

Sonji's wires measure  follows the rule since:

12+8=20 is greater than 17

12+17 = 29 is greater than 8

17+8 = 25 is greater than 12

Liam's wires measure does not follow the rule either because 16+8= 24 is smaller than 27.

Therefore it is Sonji who chose pieces that can be used to construct a triangle