18.Simplify the following into the lowest form
19.Find the 12th term from the end of the A.P. : -2, -4, -6, ..................,-100
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Answered by
2
Answer:
19.As the given sequence is in A.P the common difference is -2.
The first term a = -2
From.the formula of finding the nth term of aa A.P
tn = a + (n-1)d
Here n is 12
t12 = -2 + (12-1)-2
t12 = -2-22
t12 = -24.
Te 12th term of the given sequence is -24.
For 18th question you didn't give any values or numbers which it can be simplified to ots lowest form.
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Answered by
0
Answer:
a=-2
d=-2-(-2)= -4+2= -2
L= -100
L=a+(n-1)d
-100= -2+(n-1)-2
-100= -2-2n+2
-100= -2n
n= -100/-2
n=50.
12th term =a+(n-1)d
= -2+(12-1)-2
= -2+11*-2
= -2-22
= -24.
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