The scale factor's 3 since 12 and 4 can be divided by 3 and -6 and -2 can also be divided by 3.
Answer:
1:23
Step-by-step explanation:
20 / 460
= 1 / 23
= 1:23
Answer:
B
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
First create like dominators
2/3 -1/6 = 4/6 - 1/6
simplify using subtraction
4/6 - 1/6 = 3/6
Simplify the answer
3/6 = 1/2
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