it 90 the sec one
Answer:
x = -3
Step-by-step explanation:
3x = x - 6
2x = -6
x=-3
221
area= length times width
13 times 17= 221
17.4 cm²
base = 3x2.6x0.5 = 3.9 cm²
3 sides = 3(3)(3)(0.5) = 13.5 cm²
13.5 + 3.9 = 17.4 cm²
