Question

Need help fast please with these 5 questions

Answer 1

Answer:

16.....................................

• 6⁹*6ⁿ = 6¹²
• 6⁹⁺ⁿ = ¹²
• 9 + n = 12
• n = 3

17.....................................

• 7⁸/7ⁿ = 7³
• 7⁸⁻ⁿ = 7³
• 8 - n = 3
• n = 5

18.....................................

• 15ⁿ = 1
• 15ⁿ = 15⁰
• n = 0

19.....................................

• 1/10⁵ = 10ⁿ
• 10⁻⁵ = 10ⁿ
• -5 = n
• n = -5

20.....................................

• (8²)ⁿ = 8¹²
• 8²ⁿ = 8¹²
• 2n = 12
• n = 6