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adelina 88 [10]
3 years ago
9

The inequality 5x - 2y + 1 > 0 is satisfied by point (-2, -1). True False

Mathematics
2 answers:
Setler79 [48]3 years ago
8 0

All you have to do is plug in the coordinates into the problem to see if it is true or false:

5x - 2y + 1 > 0

5(-2) - 2(-1) + 1 > 0

-10 - (-2) + 1 > 0

-8 + 1 > 0

-7 > 0    ... So the answer would be FALSE

Ira Lisetskai [31]3 years ago
6 0

Answer:

False

Step-by-step explanation:

5x - 2y + 1 > 0

plug in  the given  ordered pair  x= -2 and y = -1:-

5(-2) - 2(-1) + 1

= -10 + 2 + 1

=  -7  which is less than 0 therefore the answer is False


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Answer:

b. 4x-8

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Neporo4naja [7]

The Mean Absolute Deviation is commonly known as MAD. The correct statement about the situation is D.

<h3>What is the Mean Absolute Deviation?</h3>

The Mean Absolute Deviation, commonly known as MAD is the average of the difference between the mean and the data points, it can also be referred to as the average of the deviations of the data points from the mean.

Given Two months ago, the mean daily rainfall in a local city was 9.4 cm. The mean absolute deviation was 3.5 cm. Last month, the mean daily rainfall in that city was 11.5 cm, and the mean absolute deviation was 1.6 cm.

As it is known that more MAD for data points means more deviation of the data points from the mean, while it is vice versa if it is less. Therefore, we can conclude Last month, the amount of rain that fell each day varied less than the month before.

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Learn more about the Mean Absolute Deviation:

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1 year ago
An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average
Lena [83]

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Data provided in the question:

Confidence level = 99%

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3 years ago
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