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3 years ago

What does -1/2x=6 what does x equal

Mathematics

2 answers:

pantera1 [17]3 years ago

8 0

Multiply both sides by 2
so
-1x = 12
divide both sides by -1
x = -12

Hope this helps :)

gogolik [260]3 years ago

3 0

Well, we would solve it as cancelling out -1/2 by multiplying it by its reciprocal (-2/1) to get x by itself, and now we'll do the same on the other side, where 6/1 times -2/1 = -12/1, which is the same as -12.
So x = -12 :3

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Answer:

40 popcorns and 90 pretzels sold.

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Let the number of popcorns is x and pretzels is y.

Set up equations:

x + y = 130
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Solve by elimination, multiply the first equation by 2 and subtract from the second equation:

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2 years ago

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Arlecino [84]

Answer: The loss is 4%

Step-by-step explanation:

Lets call litches that are 20 pcs per Rs 100 - litches A

that are 30 pcs per Rs 100- litches B

So a man can buy 2 pcs A per Rs 10

and 3 pcs B per Rs 10

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and 6x pcs B per Rs 20x

Now he gonna sell the 12x litches for y Rs

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3 years ago

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Veseljchak [2.6K]

Answer:

Since the order of choice matters, we will permute the values. a bit more explanation for this:

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Since we have 3 slots:

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Now that one slot has been used, one of the 4 alphabets has been used and since we are not allowed to repeat the same alphabets, we are left with 3 more alphabets

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Now that 2 of the 4 alphabets have been used, we are left with only 2 alphabets, so there are only 2 possible alphabets for slot 3

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We could've used the formula for Permutation as well

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