Question

Find the first, fourth, and the tenth terms of the arithmetic sequence described by the given rule: A(n)=10+(n-1)(-4.3)

Answer 1

Step-by-step explanation:

An = a + (n-1)d

a = 10 d = -4.3

first term

a1 = 10 + (1-1) (-4.3)

= 10 + (0×-4.3)

= 10

fourth term

a4 = 10 + (4-1)(-4.3)

= 10 + (3 × -4.3)

= 10 + (-12.9)

= 10 - 12.9

= - 2.9

tenth term

A10 = 10 + (10-1)(-4.3)

= 10 + (9 × -4.3)

= 10 + (-38.7)

= 10 - 38.7

= - 20.7

Hope you get your answer