Answer:
a i do believe good luck with the answer
Fhhffhbgbvyj tsbkinugkvdyncy
Answer: #1 his school is out
Step-by-step explanation: #2 bcuz all sides equal to 66cm.
Please mark me brainlest.✌✌
Answer: 0.1x - 16 (c)
Explanation: The perimeter is the sum of all three sides of the triangle. Since the three side are 0.5x + 9, 3x, and (-3.4x) - 25, the sum is as follows:
0.5x + 9 + 3x + (-3.4x) - 25 = 0.1x - 16
8x^2 -4x -7
Look at the powers of the variables of each term, then put them in descending order (ex: 5x^4, -9x^3, 11x, 7)