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algol [13]
3 years ago
9

Daine simplified the expression below.

Mathematics
1 answer:
alisha [4.7K]3 years ago
6 0

Answer:

Option (b).

Step-by-step explanation:

Given expression is :

8(1 + 2i) – (7 – 3i)

Using distributive property :

8+16i-7+3i

Taking like terms together,

1+19i

(1+19i) is the simplified expression for the given expression. He did not apply distributive property correctly for 8(1 + 2i). He forgets to multiply 8 with 2i.

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Answer:

(a) Average number expected = 13.07 people

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(a) Average number in line = (λ^2) / μ(μ - λ)

                                             = (14^2) / 15(15 - 14)

                                             = 13.07

(b) Average number in system = λ / (μ - λ)

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(d) Average total time = Average number in system / λ

                                     = 14 / 14

                                     = 1

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