That’s pretty easy you just have to basically y=mx+b
1) an = a1 + d*(n-1) => a20 = -4 + (-9)*19 = -4 - 171 = - 175
1) ---> C)
2) a81 = 20 + 4*80 = 340;
2) ---> A)
3) a12 = ?
3) ---> B) or D).
Who is my work I think the answer would be -190
Modular arithmetic is all about finding the remainder from long division (MOD), and the total number of times that a number goes into a division (DIV<span>).</span>
Answer:
In order for me to help you I need to either see a photo or know more about the other angle.
Step-by-step explanation:
