rhettperkins
04.02.2020 •
Mathematics
Find the 18th term of the sequence 5, 8, 11, 14,
a. an 18th term does not exist
b. 53
c. 56
Solved
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Ответ:
first term is 5
an=a1+d(n-1)
d=common difference
a1=first term
an=5+3(n-1)
18th term
a18=5+3(18-1)
a18=5+3(17)
a18=5+51
a18=56
C is answer
Ответ:
7y= 7(6) Reason : Given
7y = 42
8x -14 = 42 Reason: Because 8x - 14 equals to 7y
8x = 42 + 14 Reason : Because we flip 14 on to the other side of the equation thus it becomes opposute of what it was.
8x = 56
× = 7
Proven