Answer:1) c. 5,9,13,17,21
2) a. a1=8, an=an-1 -2
Step-by-step explanation: 1) an=4n+1
⇒ a1=4×1+1=5
a2=4×2+1=9
a3=4×3+1=13
a4=4×4+1=17
a5=4×5+1=21
2) clearly a1=8 and then the terms of series are decreasing by 2
so, an=an-1 -2
Answer:

Step-by-step explanation:
To factor out -3/4 out of that equation, multiply and divide by -3/4.
Say ;
=
=
Now, rearranging and making necessary commutations.
=
=
Factoring -3/4 we get an equation without any fractions
= -2x + 3y
Answer:
Step-by-step explanation: 56
Answer:
(C)19
Step-by-step explanation:
The diagram is drawn and attached.
Using the intersecting chord theorem
SL X LT = JL X LK
x X 12 = 14(x-1)
12x=14x-14
12x-14x=-14
-2x=-14
x=7
Therefore:
ST= SL + LT
=x+12
=7+12
ST=19
The correct option is C
Answer:
the second and last sentences.
Step-by-step explanation:
Its the most reasonable!