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3 years ago

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Explain how to use your number line to find the opposite of the opposite of -6

1 answer:

daser333 [38]3 years ago

5 0

You would add 12 to the number line because it would make it the opposite of -6 which is 6 then you go 6-12(MAKE SURE IN THAT ORDER) which would give you the opposite of 6 which is -6 so to show this draw a line from -6 to 6 then above that a line from 6 to -6

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PLEASE AND THANK YOU CONFUSED ON THIS

ICE Princess25 [194]

After staring at this for a few seconds, I think the equation

$-5\sqrt{10}\cdot\sqrt{15}=[1]\sqrt{[2]}$

is asking you to simplify the left hand side so that it has a form matching the right hand side, and [1] and [2] are placeholders. My guess is that they're supposed to be integers.

Notice that

$\sqrt{10}=\sqrt{5\cdot2}=\sqrt5\cdot\sqrt2$

$\sqrt{15}=\sqrt{5\cdot3}=\sqrt5\cdot\sqrt3$

$\implies\sqrt{10}\cdot\sqrt{15}=(\sqrt5)^2\cdot\sqrt2\cdot\sqrt3=5\sqrt{2\cdot3}=5\sqrt6$

Then multiplying by -5, we have

$-5\sqrt{10}\cdot\sqrt{15}=-25\sqrt6$

so I believe [1] = -25, and [2] = 6.

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3 years ago

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Step-by-step explanation:

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