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Pachacha [2.7K]
3 years ago
11

Which set of numbers does 13−−√ belong?

Mathematics
2 answers:
Digiron [165]3 years ago
7 0
The answers to this are B, C, and D.
Gennadij [26K]3 years ago
3 0

Answer:

Option A for first question.

Options C and D for second question.

Step-by-step explanation:

Which set of numbers does 13−−√ belong?

The answer is option A: irrational numbers

This is because the square root of 13 is a decimal number that does not end. Irrational numbers are those which cannot be expressed in a ratio form  and also cannot be written as a simple fraction.

To which sets of numbers does −1/4 belong?

The answer is option C and D: rational numbers  and real numbers

This is because real numbers are made up of rational and irrational numbers. We also know that every real number is either a rational number or irrational number.

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Ivanshal [37]

It looks like the differential equation is

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Factorize the right side by grouping.

xy + 3x - y - 3 = x (y + 3) - (y + 3) = (x - 1) (y + 3)

xy - 2x + 4y - 8 = x (y - 2) + 4 (y - 2) = (x + 4) (y - 2)

Now we can separate variables as

\dfrac{dy}{dx} = \dfrac{(x-1)(y+3)}{(x+4)(y-2)} \implies \dfrac{y-2}{y+3} \, dy = \dfrac{x-1}{x+4} \, dx

Integrate both sides.

\displaystyle \int \frac{y-2}{y+3} \, dy = \int \frac{x-1}{x+4} \, dx

\displaystyle \int \left(1 - \frac5{y+3}\right) \, dy = \int \left(1 - \frac5{x + 4}\right) \, dx

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8 0
2 years ago
Most dermatologists recommend using sunscreens that have a Sun Protection Factor (SPF) of at least 30. One of the authors wanted
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Answer:

95% confidence interval = ( 28.9485, 40.1515 )

Step-by-step explanation:

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4 0
3 years ago
3)
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3 years ago
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