a) 36 b) 40 c) 46 d) 50
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Answer:
c) 46
Step-by-step explanation:
a = 4
a6 = 19
n = 6
an = a + (n-1)d
19 = a + 5d
19 = 4 + 5d
5d = 15
d = 3
a1 = 4
a2 = a + d = 7
a3 = a + 2d = 10
a4 = a + 3d = 13
a5 = a + 4d = 16
a6 = 19
A1 + A2 + A3 + A4 = 7 + 10 + 13 + 16 = 46
Hope it helps you:)
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