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2 years ago

Origins of mathematics

2 answers:

7 0

The evolution of mathematics might be seen as an ever-increasing series of abstractions, or alternatively an expansion of subject matter. The first abstraction, which is shared by many animals, was probably that of numbers: the realization that a collection of two apples and a collection of two oranges (for example) have something in common, namely quantity of their members.
In addition to recognizing how to count physical objects, prehistoric peoples also recognized how to count abstract quantities, like time - days, seasons, years.Elementary arithmetic (addition, subtraction, multiplication and division) naturally followed.

nlexa [21]2 years ago

6 0

The area of study known as the history of mathematics is primarily an investigation into the origin of discoveries in mathematics and, to a lesser extent, an investigation into themathematical methods and notation of the past. ... Chinese mathematicsmade early contributions, including a place value system.

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5) Mario owns a plumbing business. He charges an hourly rate plus a onetime set up fee. His first job was 4 hours and he charged

Wittaler [7]

Answer:

Results are below.

Step-by-step explanation:

First, we need to calculate the variable income per job:

First job= 450 - 150= 300

Second job= 675 - 150= 525

Now, the hourly rate:

Hourly rate= total variable income / number of hours

First job= 300 / 4= $75

Second job= 525 / 3= $175

It is probably that the second job was 7 hours long. If not, he doesn't charge the same amount per hour

5 0

2 years ago

The coordinates on a map for City A are (55, 11) and those for City B are (116, 65). Note that coordinates represent miles. Find

sergij07 [2.7K]

Answer:

The distance between the cities is 81 miles

Step-by-step explanation:

* Lets explain how to find a distance between two points

- The distance between the two pints $(x_{1},y_{1})$ and

$(x_{2},y_{2})$ is

$d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$

* Lets solve the problem

∵ City A located at point (55 , 11)

∵ City B located at point (116 , 65)

- Let point $(x_{1},y_{1})$ = (55 , 11) and point

$(x_{2},y_{2})$ = (116 , 65)

∴ $x_{1}=55$ and $x_{2}=116$

∴ $y_{1}=11$ and $y_{2}=65$

- By using the rule above

∴ $d=\sqrt{(116-55)^{2}+(65-11)^{2}}=\sqrt{(61)^{2}+(54)^{2}}=81.47$

∴ The distance between the cities is 81 miles

7 0

2 years ago

Please answer quickkkkk!!!!!! PLEASE PLEASE!!!!!!1

Serhud [2]

Answer:

Acute: 2

Obtuse: 1

Right: 1

Step-by-step explanation:

Acute angles are less than 90 degrees

Obtuse angles are more than 90 degrees

Right angles are always 90 degrees

8 0

2 years ago

Read 2 more answers

Three hundred billion is how much less than 2 trillion? Write the answer in scientific notation.

Roman55 [17]

The difference between 300 billion and 2 trillion is 1 trillion 7 hundred billion.

In scientific notation, it would be 1.7 * 10 ^12 , ( The 12 is small to the upper right corner )

Hope this helps :D

6 0

3 years ago

Read 2 more answers

Lara has violet and blue pansies in groups of 5. She has x groups of violet pansies and y groups of blue pansies. Which expressi

gtnhenbr [62]

Answer:

5y + 5x

Step-by-step explanation:

Given that:

Lara has violet pansies and blue pansies.

Let represent;

x to be equal to the number of violet pansies; &

y to be equal to the number of blue pansies.

Then groups of 5;

the total number of pansies have is:

= 5y + 5x

8 0

2 years ago