Answer:
74
Step-by-step explanation:
the top two are 5 cm each angled sides and it completely added up to 74
Answer:
Step-by-step explanation:

Answer:
18x^2 + 9x - 5
Step-by-step explanation:
Combine like terms:
(9x^2-8) + (9x^2+9x+3)
= 9x^2 + 9x^2 + 9x - 8 + 3
= 18x^2 + 9x - 5
100×16.60=1,660
Sam cost
1,660+1,660×0.06=1,759.6