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Kamila [148]
4 years ago
8

Which of the following choices is the common difference between the terms of this arithmetic sequence? 55, 50, 45, 40, 35, ... A

. -10 B. 55 C. 5 D. -5 E. 10
Mathematics
2 answers:
bulgar [2K]4 years ago
6 0
55, 50, 45, 40, 35,…
  - 5  - 5  - 5  - 5

The common difference between the terms of the arithmetic sequence is -5, making the answer D.

a(n) = a₁ + d(n - 1)
a(n) = 55 - 5(n - 1)
a(n) = 55 - 5(n) + 5(1)
a(n) = 55 - 5n + 5
a(n) = -5n + 55 + 5
a(n) = -5n + 60
slega [8]4 years ago
4 0


the answer is D...because in the sequence they subtract 5 in each number

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If $120.99 is charged for 654 units of electricity
pochemuha

Answer:

The cost of one unit of electricity is $0.185

Step-by-step explanation:

Amount charged = $120.99

Units of electricity used = 654

The cost of a unit of electricity can be determined by dividing the amount charged by the number of units used.

So that,

cost of one unit of electricity = \frac{120.99}{654}

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This implies that the cost of electricity used is charged at $0.185 per unit.

Thus for 654 units of electricity used, the cost would be;

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if you want to multiply mixed numbers you need to turn them into improper fractions

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