plz answer the question
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Please mark this as brainliest
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Step-by-step explanation:
A= 3/2
D= -3/4-3/2=-9/4
N=10
SN=N/2(2A+(N-1)D)
S10=10/2(2*3/2+9*-9/4)
=5(3-81/4)
=5(12-81/4)
=5(-69/4)
=-345/4
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