Answer:
a21 = -61
Step-by-step explanation:


(subtract to eliminate a₁)
9 = -3d
d = -3
-19 = a₁ + (6)(-3)
-1 = a
a21 = -1 + (21 - 1)(-3)
= -61
Answer:
There are 60 monkeys in the Zoo
Step-by-step explanation:
Answer:
hope you will understand my handwriting and if it was helpful for you then plz mark me as brainliest
Answer:
(-10,-40)
Step-by-step explanation:
Here is a picture of the way I did it.