All categories

3 years ago

Calculate the length of the circumference of a circle with diameter of 6.2cm

1 answer:

3 0

The formula for circumference is C=2*pi*radius. Therefore your setup would be C=2*pi*3.1. When you actually work this out you get 19.5 after rounding.

You might be interested in

SAT scores are normally distributed, with a mean of 500 points and a

babymother [125]

Recalling that SAT scores are always expressed as multiples of 10, then the points we get on the test will be 628.

<h3>What do you mean by standard deviation?</h3>

In statistics, Standard deviation is a measure of the variation of a set of values.

σ = standard deviation of population

N = number of observation of population

X = mean

μ = population mean

WE have been given that SAT scores are normally distributed, with a mean of 500 points and a standard deviation of 100 points.

The solution as follows;

Let be X: scores of SAT

P(X ≥ x) = 0.9

P((X - 500)/100 ≥ (x - 500)/100) = 0.9

P(Z ≥ z) = 0.9

z = 1.28

1.28 = (x - 500)/100

128 + 500 = x

x = 628

Recalling that SAT scores are always expressed as multiples of 10, then the points we get on the test will be 628.

Learn more about standard deviation and variance:

brainly.com/question/11448982

#SPJ1

8 0

1 year ago

What is the rate of change and initial value for the linear relation that includes the points shown in the table?

defon

The initial value: 25, rate of change: -5 ⇒ answer C

Step-by-step explanation:

The table:

→ x : 1 : 3 : 5 : 7

→ y : 20 : 10 : 0 : -10

The linear relation between x and y is y = m x + b, where

m is the rate of change
b is the initial value

Let us use the table to find m and b

∵ $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ , where $(x_{1},y_{1})$

and $(x_{2},y_{2})$ are any two ordered pairs in the table

∵ $(x_{1},y_{1})$ = (1 , 20)

∵ $(x_{2},y_{2})$ = (3 , 10)

∴ $m=\frac{10-20}{3-1}=\frac{-10}{2}=-5$

∵ m is the rate of change

∴ The rate of change is -5

Substitute the value of m in the form of the linear relation

∴ y = -5 x + b

To find b substitute x and y in the equation by the coordinates of any points in the table, let us chose point (5 , 0)

∵ x = 5 and y = 0

∴ 0 = -5(5) + b

∴ 0 = -25 + b

- Add 25 to both sides

∴ 25 = b

∵ b represents the initial value

∴ The initial value is 25

The initial value: 25, rate of change: -5

Learn more:

You can learn more about the linear equation in brainly.com/question/4326955

#LearnwithBrainly

8 0

3 years ago

Order from least to greatest. 5/12, 2/3, 1/2, 5/6, 3/4A) 3/4, 5/6, 2/3,1/2, 5/12B) 5/12, 1/2, 2/3, 3/4, 5/6C) 1/2, 2/3, 3/4, 5/6

adell [148]

Answer:

B) 5/12, 1/2, 2/3, 3/4, 5/6

Step-by-step explanation:

You want to get all the fractions to the common denominator, which in this case is 12. once you do this you can easily order them from least to greatest. Here are the fractions with the common denominator.

2/3 = 8/12

1/2 = 6/12

5/6 = 10/12

3/4 = 9/12

Once you have all these with the same denominator, you order them from least to greatest, which gets you the answer (B.)

5 0

2 years ago

Uh i need help ; - ;

Kaylis [27]

Answer:

I think it's Y divided by X

4 0

2 years ago

Read 2 more answers

Calculate the area of each circle and show work

Reil [10]

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

$\large\blue\textsf{\textbf{\underline{\underline{Question:-}}}}$

A circle's radius is 0.3 yd. What is its area?

$\large\blue\textsf{\textbf{\underline{\underline{Answer and how to solve:-}}}}$

Formula for Area of a Circle:-

⇒ A=πr²

<u>Where</u>

A = area
π = pi, 3.14
r = radius, 0.3 yd

Substitute:-

A=π(0.3)²

On simplification,

A=0.09π

On further simplification,

⇒ A=0.283 yd²

- - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - -- - - - - - - - -

3 0

2 years ago