<img src="https://tex.z-dn.net/?f=%5Csqrt%7B25%7D%20%2B%5Csqrt%7B9%7D%20%3D%20%3F" id="TexFormula1" title="\sqrt{25} +\sqrt{9} =

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Bond [772]

3 years ago

?" alt="\sqrt{25} +\sqrt{9} = ?" align="absmiddle" class="latex-formula">

Mathematics

2 answers:

77julia77 [94]3 years ago

4 0

Answer:

Square root means to find what multiplied by itself gets the number shown.

5 x 5 = 25 so the square root of 25 is 5.

3 x 3 = 9 so the square root of 9 is 3.

3 + 5 = 8

8 is the answer

Step-by-step explanation:

inn [45]3 years ago

3 0

Answer:

$\boxed{8}$

Step-by-step explanation:

$Simplify \: the \: following : \\ = > \sqrt{25} + \sqrt{9} \\ \\\sqrt{25} = \sqrt{ {5}^{2} } = 5: \\ = > 5 + \sqrt{9} \\ \\ \sqrt{9} = \sqrt{ {3}^{2} } = 3: \\ 5 + 3 \\ \\ 5+3=8: \\ Answer:8$

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Complete the steps to solve the polynomial equation x3 – 21x = –20. According to the rational root theorem, which number is a po

jeka94

Answer:

Zeroes : 1, 4 and -5.

Potential roots: $\pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20$ .

Step-by-step explanation:

The given equation is

$x^3-21x=-20$

It can be written as

$x^3+0x^2-21x+20=0$

Splitting the middle terms, we get

$x^3-x^2+x^2-x-20x+20=0$

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Splitting the middle terms, we get

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Using zero product property, we get

$x-1=0\Rightarrow x=1$

$x-4=0\Rightarrow x=4$

$x+5=0\Rightarrow x=-5$

Therefore, the zeroes of the equation are 1, 4 and -5.

According to rational root theorem, the potential root of the polynomial are

$x=\dfrac{\text{Factor of constant}}{\text{Factor of leading coefficient}}$

Constant = 20

Factors of constant ±1, ±2, ±4, ±5, ±10, ±20.

Leading coefficient= 1

Factors of leading coefficient ±1.

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Answer:

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60)

Step-by-step explanation:

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7:8:12 ≠ 6:7:11

60) The side length ratios both reduce to 8:7:10, so the triangles are similar.

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