Okay, So For The First Question, We Need To Make An Equation. 3x = X + 100 Solve By Adding X to The Left Side. 4x = 100 Divide. X = 100/4 100/4 = 25. So: X = 25 Question 2: We Know That This Is A Right Angle So: 7x + 27 = 90 Subtract 27. 7x = 90 - 27 90 - 27 = 63 7x = 63 Divide: X = 63/7 63/7 = 9 X = 9 Question 3: We Know That This Is A Right Angle. So: 8x - 6 = 90 Add 6 8x = 90 + 6 90 + 6 = 96. 8x = 96. Divide: X = 96/8 96/8 = 12 X = 12
4. True because AB and BD are the same length and meet at B, which goes down to the middle of AD, making it symmetrical, therefor AE and AD are perpendicular
