1. 2n-6
2(16)-6
32-6
26
p
2. 15g
15(0.2)
3
3. 45g
45(0.2)
9
4. 7m+8
7(2)+8
22
5.50g*50g
10*10
100
Answer:
see explanation
Step-by-step explanation:
The n th term of an AP is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given
6(a₁ + 5d) = 13(a₁ + 12d) ← distribute parenthesis on both sides
6a₁ + 30d = 13a₁ + 156d ( subtract 13a₁ from both sides )
- 7a₁ + 30d = 156d ( subtract 30d from both sides )
- 7a₁ = 126d ( divide both sides by - 7 )
a₁ = - 18d
Now
a₁₉ = a₁ + 18d = - 18d + 18d = 0 ← as required
Mate, this answer may seem odd, but I tried four times, but first you want 1/4 as a decimal, and it would be 0.25. Now take that a dived 36, and you'll get 144<span />
That’s ur answer, your welcome