Respuesta :
Answer:
- C. 6
Step-by-step explanation:
Given
- S = n² + n
- S = 42, n = ?
Substitute and solve for n:
- 42 = n² + n
- n² + 2*1/2n + 1/4 = 42.25
- (n + 0.5)² = 42.25
- n + 0.5 = √42.25
- n + 0.5 = 6.5
- n = 6
Correct option is C
Answer:
Step-by-step explanation:
Given
Substitute and solve for n:
Correct option is C