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3 years ago

9

What is equivalent to 3x-4-(5x+7)

2 answers:

larisa86 [58]3 years ago

7 0

Easy, so here’s what you do, take care of the parenthesis so it looks like 3x-4 because the negative is disturbed to make the positive 5x a negative and the positive 7x into a negative, a good pointer is anytime you’re multiplying two signs, a good thing to know is if the signs are different, it’s negative, if they’re the same, they’re positive. Now you want to move the negative 5x to the left of the +3x so you should see -5x+3x-4-7 so from here, you want to add the -5x to the 3x to get you -2x so now you should have -2x-4-7 then subtract the 4 from the seven or the seven from the four looking like 4-7 to get you -11 so now you should have
-2x -11 << I hope this helped!! ^_^

SIZIF [17.4K]3 years ago

6 0

-2x-11 is equivalent to 3x-4-(5x+7)

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3 years ago

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antiseptic1488 [7]

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3 years ago

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Reptile [31]

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B because you multiply all the similar numbers together then at the end you add them all up.Step-by-step explanation:

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3 years ago

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Oduvanchick [21]

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3 years ago

Need help finding n forgot how to do this

andreyandreev [35.5K]

Answer:

$n = 3\sqrt{2}$

There are two best ways to solve this.

using cosine method:

$cos(n) = \frac{adjacent}{hypotenuse}$

$cos(60) = \frac{adjacent}{6\sqrt{2} }$

$adjacent,n = cos(60) * 6\sqrt{2}$

$n = 3\sqrt{2}$

using sine method:

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$n = sin(30) * 6\sqrt{2}$

$n = 3\sqrt{2}$

There are many ways, not to make it complex, these are the best ways to solve for n. Hope it helps ~

5 0

2 years ago

Read 2 more answers