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balandron [24]
2 years ago
7

The difference between 12 and ten times a number is -28

Mathematics
1 answer:
aev [14]2 years ago
8 0

Answer:

<h2>4</h2>

Step-by-step explanation:

n-\text{the number}\\\\12-10n=-28\qquad|\text{subtract 12 from both sides}\\\\12-12-10n=-28-12\\\\-10n=-40\qquad|\text{divide both sides by (-10)}\\\\\dfrac{-10n}{-10}=\dfrac{-40}{-10}\\\\\boxed{n=4}

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7nadin3 [17]

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The increase of 9.8% rounds to 10% when rounding to the nearest ten

An increase of 10% would use the multiplier 1.1

Think of it like saying 1 + 0.10 = 100% + 10%

Similarly, the 5.1% rounds to 5% and an increase of this amount will use the multiplier 1.05

So if we started with 20 items, then 20(1.1)(1.05) is the expression that estimates an increase of 10% followed by an increase of 5%. The order doesn't matter (so you could increase by 5% first, then 10% later).

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3 years ago
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Llana [10]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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belka [17]

Answer:

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Step-by-step explanation:

Exterior angles thm:

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3 years ago
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