3 years ago

Which phrase is usually associated with addition

Mathematics

1 answer:

Irina18 [472]3 years ago

6 0

The tots of two numbers, or you know the communitive property

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Simplify the surd 3√ 20 +√ 45

melisa1 [442]

Answer:

9 $\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplify the radicals

$\sqrt{20}$

= $\sqrt{4(5)}$

= $\sqrt{4}$ × $\sqrt{5}$

= 2 $\sqrt{5}$

$\sqrt{45}$

= $\sqrt{9(5)}$

= $\sqrt{9}$ × $\sqrt{5}$

= 3 $\sqrt{5}$

Then

3 $\sqrt{20}$ + $\sqrt{45}$

= 3(2 $\sqrt{5}$ ) + 3 $\sqrt{5}$

= 6 $\sqrt{5}$ + 3 $\sqrt{5}$

= 9 $\sqrt{5}$

3 0

2 years ago

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<img src="https://tex.z-dn.net/?f=%5C%5C%20%5Cleq%20%5Cbeta%20%5Calpha%20%5Calpha" id="TexFormula1" title="\\ \leq \beta \alpha

nadya68 [22]

Hi lol I don’t understand you’re question I need more context

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2 years ago

If an object is moving at a changing speed in the same direction what is the acceleration of the object (zero or not Zero)

andreyandreev [35.5K]

Answer:

zero

Step-by-step explanation:

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2 years ago

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Question 21 is probably the hardest question on this homework

Snezhnost [94]

-15+5x= 20

5x= 35
x= 7

20= -15+5x

35= 5x

7 = x

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3 years ago

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(64/8/ 4 + 7 – 2) • 5 =

maria [59]

Answer:

Step-by-step explanation:

Let me know if I got it right

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2 years ago

Which phrase is usually associated with addition​

Which phrase is usually associated with addition