will give brainliest!!! the fourth term of an arithmetic sequence is 3 and the ninth term is 23, what is the first term pls?
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Answer:
a= -19
Step-by-step explanation:
a4=3
a+3d=3-------(1)
a9=23
a+8d=23------(2)
subtracting (1)&(2) we get,
d=4
substituting in (1)
a= -19
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