squidywar297
18.04.2021 •
Mathematics
What are the first three terms of the sequence defined by the following equation? an = 2 • (-3)n - 1.
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Ответ:
-7, -13, -19
Step-by-step explanation:
plug in 1,2, and 3 into the part of the equation "n".
Ответ:
a1 = -7
a2 = - 13
a3 = - 19
Step-by-step explanation:
n = 1
a1 = 2*(-3)*1`- 1
a1 = -6 - 1
a1 = - 7
n=2
a2 = 2(-3)*2 - 1
a2 = -12 -1
a2 = - 13
n3 = 2(-3)*3 - 1
n3 = -18 - 1
n3 = -19
Each term is - 6 away from the previous one.
Ответ:
C
Step-by-step explanation:
164.7/8.6 = 19.15
about 20 miles per gallon