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ella [17]
3 years ago
7

Explain the different ways it is possible to add two rational numbers and get a negative number

Mathematics
2 answers:
snow_lady [41]3 years ago
5 0
<u><em>Answer:</em></u>
both numbers are negative
negative number is greater than the positive number

<u><em>Explanation:</em></u>
<u>In order to add two rational numbers and get a negative value, one of two scenarios should occur:</u>
<u>1- both numbers are negative.</u>
In this case, the answer would definitely be negative as the two numbers are originally negative
<u>Examples:</u>
-9 + -2 = -9 - 2 = -11
\frac{-1}{2} +   \frac{-3}{2} =  \frac{-4}{2} = -2

<u>2- negative number is greater than the positive number</u>
In this case, the negative sign would dominate and the result would be negative
<u>Examples:</u>
-9 + 3 = -6
\frac{-5}{6} +  \frac{2}{6} =  \frac{-3}{6}

Hope this helps :)
boyakko [2]3 years ago
4 0

-- If both of them are negative,

or

-- If their signs are different and the negative number has
a bigger absolute value than the positive one,

then

-- Their sum is negative.

Actually, I don't think it matters whether they're rational or not.

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Researchers found a linear relationship between tail-feather length (in mm) and weight (in g) in a random sample of 20 male long
Dafna11 [192]

Answer:

   

Step-by-step explanation:

As far as I know, this question is not correct. I have the searched the internet and found a similar question which makes sense. In the correct question, 95% Confidence Interval is already given calculated from the software and

<em>95% prediction interval is asked (PI) for the weight of one male long tailed finch weighing 20 g.</em>

We have this data given in the correct question found on internet. And they have calculated this data using software:

New Obs = 20

Fit = 92.34

SE Fit = 5.26

95% Confidence Interval = (81.29, 103.38)

95% Prediction Interval = (67.61, 117.06)

Now, Just look at the prediction interval:

Now the formula for Prediction Interval = Point Estimate ± Margin of Error

Upper limit for prediction interval = 117.06

lower limit = 67.61

Formula for point estimate = (Upper + Lower)/2

Point Estimate = (117.06 + 67.61)/2

Point Estimate = 92.34

Formula for margin of error = (Upper - Lower)/2

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Formula for Prediction Interval = Point Estimate ± Margin of Error

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4 0
3 years ago
Write the missing exponent of 100=10 =
Ganezh [65]
Maybe 5 is the answer
4 0
3 years ago
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3 years ago
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KengaRu [80]
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I need help with this homework
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