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3 years ago

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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Difference of two squares <br> Calculate this <br> 81-(3x-2)^2<br> ^2= to the power of 2

Marat540 [252]

<span>81-(3x-2)^2
= </span><span>81-(-6)^2
= 81 - 36
= 45

hope it helps</span>

5 0

3 years ago

Elsa brought a 12 ft piece of ribbon. She wants to cut it into 3/4-foot pieces. how many pieces can she cut

Softa [21]

Answer:

I think the answer will be 16 pieces

Step-by-step explanation:

16 x 3/4 will equal 12

4 0

4 years ago

What’s 1+1 I am so confused I am in middle school and this is the hardest question 10 points if u get it right lol

julsineya [31]

Answer:

It depends how you were taught. You could say it's 11 (eleven) or 2.

6 0

3 years ago

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Last year, a person wrote 126 checks. Let the random variable x represent the number of checks he wrote in one day, and assume

Arisa [49]

Answer: The mean number of checks written per day $=0.3452$

Standard deviation $=0.5875$

Variance $=0.3452$

Step-by-step explanation:

Given : The total number of checks wrote by person in a year = 126

Assume that the year is not a leap year.

Then 1 year = 365 days

Let the random variable x represent the number of checks he wrote in one day.

Then , the mean number of checks wrote by person each days id=s given by :-

$\lambda=\dfrac{126}{365}\approx0.3452$

Since , the distribution is Poisson distribution , then the variance must equal to the mean value i.e. $\sigma^2=\lambda=0.3452$

Standard deviation : $\sigma=\sqrt{0.3452}=0.5875372328\approx0.5875$

6 0

3 years ago

The graph of which function passes through the point ( 0,pi/2 )

inn [45]

<h2><u>Answer:</u></h2>

y = cos ^- 1 (x)

Step-by-step explanation:

The Function y = cos -1x = arccos x and its Graph: Since y = cos -1x is the inverse of the function y = cos x, the function y = cos -1x if and only if cos y = x. This leaves the range of the restricted function unchanged as [-1, 1].

6 0

3 years ago

Read 2 more answers