Answer:
1089
Step-by-step explanation:
The original number is A0CD, We have that DC0A = 9 x A0CD.
If A =1, then D = 9 and we have:
9C01 = 9 x 10C9
In order for this expression to be true, the following must also be true:
(C x 9) + 8 must be divisible by 10, which means that C x 9 must end in a 2.
The only multiple of 9 (from 9 to 81) that ends in a 2 is 72.
72 = 9 x 8.
Therefore, C must be 8 and the original number is 1089. Multiply it by 9 to check the answer:
1089 x 9 = 9,081
Therefore, 1089 is correct.
X=2t
y=1-t
t=x/2
y=1-x/2
y=(-1/2)x+1
Formula for perimeter a+b+a+b
12+5+12+5= 17+17= 34 .34=P
Answer:
Step-by-step explanation:
-8 -8
₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋
⇵
Answer:
2. 27
3. Option C. 3, 5, 9, 17, 33, ...
Step-by-step explanation:
2. The sequence is defined by the explicit function 
Therefore, the 5th term i.e. 
of the sequence.
(Answer)
3. The explicit definition is 
Hence, 
Therefore, the option C is the right sequence. (Answer)
