Answer:
I think the answer is -1
Step-by-step explanation:
the sequence goes i, -i, 1, -1
Right? >_>
Answer: 40, 30
Step-by-step explanation:
Answer:
(x-3)^2+(y+2)^2=16
Step-by-step explanation:
center (h,k) radius r
(x-h)^2+(y-k)^2=r^2
Answer:
$22.5
Step-by-step explanation:
25% of $90
25% x 90
0.25 x 90
$22.5