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Leni [432]
3 years ago
6

3+3 (This is just to get you points or complete challenges)

Mathematics
1 answer:
vova2212 [387]3 years ago
3 0

Answer:

6

Step-by-step explanation:

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If S = {x,y,4,9,?) , which could describe U ?
Blizzard [7]

Answer:- A) U= { keys on a keyboard}


Explanation:-

  • A set is a well defined collection of objects.
  • A Universal set is the set containing all objects and all other sets are subsets of the universal set. It is denoted by 'U'.

Given set : S = {x,y,4,9,?}

Clearly it contains numbers (4,9), alphabets(x,y) and punctuation mark(?).

Thus the universal set of the given set must contain all of them.

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5 0
3 years ago
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Prove that for any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.
Pachacha [2.7K]

For any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.

Step-by-step explanation:

In order to prove the statement we can take any value of x and then solve the expression to see if it equal to -16 or not.

So,

Taking x = 2

=(x-3)(x+7)-(x+5)(x-1)\\=(2-3)(2+7)-(2+5)(2-1)\\=(-1)(9)-(7)(1)\\=-9-7=-16

Taking x = 5

=(x-3)(x+7)-(x+5)(x-1)\\=(5-3)(5+7)-(5+5)(5-1)\\=(2)(12)-(10)(4)\\=24-40\\=-16

Taking x= 10

=(x-3)(x+7)-(x+5)(x-1)\\=(10-3)(10+7)-(10+5)(10-1)\\=(7)(17)-(15)(9)\\=119-135=-16

Hence,

For any value of x the value of the expression (x–3)(x+7)–(x+5)(x–1) is equal to –16.

Keywords: Polynomials, expressions

Learn more about polynomials at:

  • brainly.com/question/10941043
  • brainly.com/question/10978510

#LearnwithBrainly

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2 liquid gallons

Step-by-step explanation:

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R'after the translation (x,y) + (x-17-1), followed by a dilation by a scale factor of 2 centered at the origin?​
irga5000 [103]

Answer:

To find the scale factor for a dilation, we find the center point of dilation and measure the distance from this center point to a point on the preimage and also the distance from the center point to a point on the image. The ratio of these distances gives us the scale factor, as Math Bits Notebook accurately states.

Step-by-step explanation:

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