Answer:
10b +13 +18a
Step-by-step explanation:
The perimeter of a triangle= Sum of the length of all sides
Therefore,
Perimeter = (10a +9) + (8a - 3) + (10b + 7)
= 10a +8a +10b + 9+7-3
= 18a + 10b + 13
105
17.5÷2.5=7
7x15=105
im thinking number #A but it also d
B
2) longest line is (-1, -3) and (-1, 7)
3) (-1, -3), (-6,2), and (2,4)
