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pogonyaev
3 years ago
11

What is the standard form of -5a(7) + 4a(2)

Mathematics
1 answer:
Bas_tet [7]3 years ago
8 0
-5a(7) + 4a(2) \\ \\ -35a + 4a \times 2 \\ \\ -35a + 8a \\ \\ -27a \\ \\ Answer: \fbox {-27a}
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Step-by-step explanation:

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IgorLugansk [536]

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8 0
3 years ago
Sally invests £8000 in a savings account. The account pays 2.8% compound interest per year work out the value of her investment
Alborosie

Answer: the value of her investment after 4 years is £8934.3

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The formula for determining compound interest is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

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t represents the duration of the investment in years.

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