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solong [7]
3 years ago
7

Multiply: 2.7 × (–3) × (–1.2). A. –9.72 B. –10.8 C. 10.8 D. 9.72

Mathematics
2 answers:
Vikentia [17]3 years ago
6 0

Answer:  \text{ D) } 9.72

Step-by-step explanation:

Here the give expression is,

2.7 \times(-3)\times (-1.2)

We can write,

2.7 \times(-3)\times (-1.2) = 2.7 \times 3.6  ( because -a\times -b = ab)

2.7 \times(-3)\times (-1.2) = 9.72

⇒ Option D is correct.

Rufina [12.5K]3 years ago
3 0

<u>Answer:</u>

D. 9.72

<u>Step-by-step explanation:</u>

We are given the following expression and we are to multiply it:

2.7 × (–3) × (–1.2)

Multiplying 2.7 and (–3) , starting from the left to get:

2.7 × (–3) = –8.1

Then multiplying this product with (–1.2) to get:

–8.1 × (–1.2) = 9.72

Since both of the terms were negative here so when negative is multiplied with another negative, it becomes positive.

Therefore, the correct option is D. 9.72.

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Answer:

The minimum percentage of recently sold homes with prices between $197,200 and $232,800 is 75%.

Step-by-step explanation:

Chebyshev Theorem

The Chebyshev Theorem can also be applied to non-normal distribution. It states that:

At least 75% of the measures are within 2 standard deviations of the mean.

At least 89% of the measures are within 3 standard deviations of the mean.

An in general terms, the percentage of measures within k standard deviations of the mean is given by 100(1 - \frac{1}{k^{2}}).

In this question:

Mean of $215,000, standard deviation of $8900.

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Within 2 standard deviations of the mean, so:

The minimum percentage of recently sold homes with prices between $197,200 and $232,800 is 75%.

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