Find the nth term of the Arithmetic Progression:-10,-15,-20,.......?
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Find the nth term of the Arithmetic Progression:-10,-15,-20,.......?
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Step-by-step explanation:
-10 , -15 , -20 ,......
In above Arithmetic progression ,
a = -10 , d = -15 + 10 = -5
nth term An = a + (n-1)d
= -10 + (n-1)(-5)
= -10 - 5n + 5
= -5n - 5 = -5(n + 1)