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ella [17]
2 years ago
6

What is the area of a circle whose radius is 4x centimeters? write your answer in terms of pi.​

Mathematics
2 answers:
Oduvanchick [21]2 years ago
5 0

Answer:

16xpi

Step-by-step explanation:

To find the area of a circle the formula is pi r squared.

r represents radius, aka 4x.

4 times 4 yields 16.

Leaving you with 16xpi

ArbitrLikvidat [17]2 years ago
4 0

Answer:

50.24

Step-by-step explanation:

A= πr^2

3.14 x 4^2 = 50.24

(4^2=16)

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Answer:

62.44

Step-by-step explanation:

Line up the decimals and then add them up like usual, and then place the decimal where it should go. THen you get your answer.

Hope this helped!

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What is the perimeter of rectangle JKLM?
egoroff_w [7]

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They are spread primarily by human activities. Three methods that can spread invasive species is ; blowing by wind, splashed by
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3 years ago
Use the data in the table below and a graphing calculator to describe how a linear model compares to a quadratic model. Analyze
Delvig [45]

The quadratic model and the linear model of the table of values are the same

<h3>The linear model of the data</h3>

To do this, we make use of a graphing calculator.

From the graphing calculator, we have the following summary:

  • Sum of X = 0
  • Sum of Y = 113
  • Mean X = 0
  • Mean Y = 22.6
  • Sum of squares (SSX) = 10
  • Sum of products (SP) = 28

The regression equation is

y = mx + b

Where

m = SP/SSX = 28/10 = 2.8

b = MY - bMX = 22.6 - (2.8*0) = 22.6

So, we have:

y = 2.8x + 22.6

See attachment for graph (1)

<h3>The quadratic model of the data</h3>

To do this, we make use of a graphing calculator.

From the graphing calculator, we have the following summary:

  • a = 0
  • b = 2.8
  • c = 22.6

0 X^2 +2.8 X +22.6

The regression equation is

y = ax^2 + bx + c

So, we have:

y = 0x^2 + 2.8x + 22.6

See attachment for graph (1)

<h3>Why both graphs look the same</h3>

The graphs look the same because when the quadratic model is simplified, it gives the linear model.

This in other words mean that:

The quadratic model and the linear model of the table of values are the same

Read more about regression at:

brainly.com/question/7656407

#SPJ1

7 0
1 year ago
Pls help with equations
qaws [65]

24.  (2x+2)+(2x+2)+(2x+2)=(x+8)+(x+8)+(x+8)+(x+8)

      6x+6=4x+32

          -6        -6

     6x=4x+26

    -4x   -4x

    2x/2=26/2

    x=13  

     

7 0
3 years ago
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