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koban [17]
3 years ago
7

Can someone PLEASEEE tell me what this stands for and how to use it π

Mathematics
2 answers:
Lena [83]3 years ago
6 0
It is pi 3.14159265359
and you use it for a circle
gulaghasi [49]3 years ago
3 0
Π is a constant that arises when the circumference of a circle is divided by its diameter. mathematically:

π=C/d, where C=circumference of a circle and d=diameter of circle.

It is most commonly used to find the circumference, diameter, radius, and area of a circle.  But it also has many other uses such as a measure of angles in radians.
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Solve the equation X³+2X²-5X -6​
Natali [406]

Answer: x = {-1, -3, 2}

<u>Step-by-step explanation:</u>

x³ + 2x² - 5x - 6 = 0

Use the rational root theorem to find the possible roots:  ±1, ±2, ±3, ±6

Use Long division, Synthetic division, or plug them into the equation to see which root(s) work <em>(result in a remainder of zero)</em>.

I will use Synthetic division.  Let's try x = 1

1 |  1    2    -5     -6

  |<u>  ↓    1      3     -2 </u>      

     1     3    -2    -8   ← remainder ≠ 0 so x = 1 is NOT a root

 Let's try x = -1

- 1 |  1     2    -5    -6

   |<u>  ↓    -1     -1     6 </u>      

      1     1     -6     0   ← remainder = 0 so x = -1 is a root!

The coefficients of the reduced polynomial are: 1, 1, -6  -->   x² + x - 6

Factor: x² + x - 6

          (x + 3)(x - 2)

Set those factors equal to zero to solve for x:

x + 3 = 0   --> x = -3

x - 2 = 0    --> x = 2

Using Synthetic Division and Factoring the reduced polynomial, we found

x = -1, -3, and 2

6 0
3 years ago
Che sum of two numbers is 2. If one number is subtracted from the other, their difference is - 8. Find the numbeRs
goldfiish [28.3K]
I wanna say 10 or ether -10 since if it was subtracted from 2 then it would equal -8
7 0
2 years ago
Read 2 more answers
Explain how a number line can be used to find the difference for 34-28
Luba_88 [7]
You can count from 34-28 and the numbers you counted (the numbers in between 34-28) is your answer.
6 0
3 years ago
Read 2 more answers
A tunnel is in the shape of a parabola. The maximum height is 31 m and it is 13 m wide at the base as shown below.
yan [13]
Using the given values from the problem and the illustration, three points are known which are (0,0), (6.5,-31), (-6.5,-31). The first step in solving this problem is to determine the equation of the parabola.
y = ax²
-31 = a(6.5)²
-31 = 42.25a 
a = -31/42.25 
a = -124/169 

Therefore, the equation of the parabola is y = (-124/169)x². The value 4.5 is then substituted in the equation as x to get the answer which is 16.14 meters.
6 0
3 years ago
The man is pushing with a force of 75 N. The rock is not moving. This is an example of what kind of force?
Oksi-84 [34.3K]
Kinetic energy
Pushing is energy in motion and energy in motion is classified as (KE) kinetic energy
3 0
3 years ago
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