24pr + 3(p + 2pr)
= 24pr + 3p + 6pr
= 24pr + 6pr + 3p
= 30pr + 3p
= 3p(10r + 1)
Explanation:
30pr + 3p
= 3p x 10r + 3p x 1
= 3p(10r) + 3p(1)
= 3p(10r + 1)
In this question, it is given that the eighth term is 78 and the explicit formula is

And the recursive formula is

And we have to find the 20th term . And for that, we put 20 for x in the explicit formula. That is

Therefore on using the explicit formula, we will get 198 as the 20th term .
You have not written the functions can u please write
Answer:
<h2>186 : 1</h2>
Step-by-step explanation:
1cm = 10mm
Therefore 8cm = 8 · 10mm = 80mm
The scale of the model

We know that the sum of the internal angles in each triangle is 180°.
Therefore we have the equation:

substitute and solve:

We have

substitute the value of x to the expression:

Answer: m∠N = 42 degrees