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motikmotik
3 years ago
5

Who created multiplication ?

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
4 0

Multiplication is a very old concept in math. So old that it dates back to ancient egypt, mesopotamia, etc. Each place probably came up with the concept on their own parallel to one another, or trade helped make the concept spread. It's very likely that the actual person who came up with the idea is unknown and won't be known since the concept is so ancient. It's like asking "who came up with the alphabet" which is an equally old concept.

Side note: multiplication is repeated addition. So if we added 3+3+3+3+3 to get 15, then we can say 3*5 = 12 as a shortcut. So its likely ancient peoples were adding the same number to itself over and over, leading them to develop a shortcut notation/method to get the answer quicker.

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1.
vodka [1.7K]

9514 1404 393

Answer:

  C.  The zeros are -1 and 5/2, because f(x) = (x + 1)(2x-5).

Step-by-step explanation:

The zeros of the function are the values that make the factors zero. The factors need to multiply out to give the original standard-form equation.

The sign of the constant (-5) tells you the product of the constants in the factors must be -5. That is only true for choices B and C.

Additionally, the x-term needs to match the result of multiplying out the factors.

  B.  (x -1)(2x +5) = 2x^2 +3x -5 . . . . . . . . . wrong x-term (not -3x)

  C.  (x +1)(2x -5) = 2x^2 -3x -5 . . . . . . . . . matches the given f(x)

The factors of C are zero when x=-1, x=5/2.

8 0
2 years ago
A flying disc has a circumference of 81.64 centimeters. What is the area of the flying disc? Use 3.14 for pi
Daniel [21]

9514 1404 393

Answer:

  530.66 cm²

Step-by-step explanation:

A formula for the area of the circular disc can be written as ...

  A = C²/(4π)

  A = (81.64²)/(4·3.14) = 6665.0896/12.56

  A = 530.66 . . . . square centimeters

6 0
3 years ago
I need help with this, I don't understand this
Rudiy27
If you are trying to find the plot you go up as meany numbers as it says and then go over as meany numbers as it says.
8 0
3 years ago
The price of a house is originally listed at $135,000. The owners are having a hard time selling it and decide to reduce the pri
tatyana61 [14]
((99,900−135,000)
÷135,000)×100
=−26%
7 0
3 years ago
Proportion is ________________
Elis [28]
A part, share, or number in relative comparison to the whole. To be proportional means they are equal parts of the whole. In math, it would mean the same thing. A proportion is the named given to a statement where two ratios are equal. 

5 0
3 years ago
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