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3 years ago

To which subset of real numbers does the following number belong? square root of 7

Mathematics

2 answers:

Kay [80]3 years ago

8 0

The square root of 7 is an irrational number.

zzz [600]3 years ago

6 0

Answer:

it rational ask alexa what square root of 7 is, then ask her if its rational :)

Step-by-step explanation:

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Bess [88]

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Step-by-step explanation:

The significance is t

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2 years ago

3. If x2 + 4 = 29, then x2 - 4 = ? A. 5 B. 121 C. 21 D. 25 E. 33

EastWind [94]

Answer is c as x is 25/2

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3 years ago

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What is the dot product of vectors

Paul [167]

Answer:

The dot product of vectors is the method used to "multiply" vecotrs since vectors aren't directly multiplieable

Step-by-step explanation:

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3 years ago

PLEASE HELP ASAPP!!!!!!!!!!!!!!!

max2010maxim [7]

$\dfrac{1}{3^{-2}x^{-4}y^2}=\dfrac{3^2x^4}{y^2}\\\\\\
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3 years ago

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A square fits exactly inside a circle with each of its vertices being on the circumference of the circle.

swat32

Answer:

The side of the square is 5.971 cm

Step-by-step explanation:

If the square fits the circle exactly, then its diagonal is equal to the diameter of the circle. Since the side of the square has a length of $x$ cm, then it's diagonal have the length of $x\sqrt2$ cm. Using the circle's area we can find the diagonal of the square, as shown below:

$area = \pi*r^2\\56 = pi*r^2\\r^2 = \frac{56}{\pi}\\r = \sqrt{\frac{56}{\pi}}\\r = 4.222$

Since the diameter of the circle is the same as the diagonal of the square, then:

$x\sqrt{2} = 2*r \\x = \frac{2*r}{\sqrt{2}}\\x = \frac{2*4.222}{\sqrt{2}}\\x = 5.971$

The side of the square is 5.971 cm

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3 years ago

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