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wolverine [178]
3 years ago
15

Help ppl me yalllll

Mathematics
2 answers:
prisoha [69]3 years ago
5 0

Answer:

B

Step-by-step explanation:

The circumference (C) of a circle is calculated as

C = 2πr ( isolate r by dividing both sides by 2π )

C ÷ 2π = r → B

KATRIN_1 [288]3 years ago
5 0

Answer:

b=\frac{c}{2\pi }

Step-by-step explanation:

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ABCD is a quadrilateral with A(8,3), B(6, 7), C(-1,5), D(-6, -1). Determine whether ABCD is a trapezoid. Justify
pashok25 [27]

Answer: ABCD is not a trapezoid.

Step-by-step explanation:

6 0
2 years ago
i don't understand how to make it into a graphing form? how do you find the center and radius? (I'm confused because it has a 4x
Vilka [71]

Answer: \bold{(x-2)^2+(y-3)^2=\dfrac{1}{4}}

               Center = (2, 3)          radius = \bold{\dfrac{1}{2}}

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

When both the x² and y² values are equal and positive, the shape is a circle. Complete the square to put the equation in format:

(x-h)² + (y-k)² = r²    where

  • (h, k) is the vertex
  • r is the radius

1) Group the x's and y's together and move the number to the right side

   4x² - 16x         + 4y² - 24y               = -51        

2) Factor out the 4 from the x² and y²

    4(x² - 4x          ) + 4(y² - 6y            ) = -51

3) Complete the square (divide the x and y value by 2 and square it)

    4[x^2-4x+\bigg(\dfrac{-4}{2}\bigg)^2]+4[y^2-6y+\bigg(\dfrac{-6}{2}\bigg)^2]=-51+4\bigg(\dfrac{-4}{2}\bigg)^2+4\bigg(\dfrac{-6}{2}\bigg)^2

  = 4(x - 2)² + 4(y - 3)² = -51 + 4(-2)² + 4(-3)²

  = 4(x - 2)² + 4(y - 3)² = -51 + 4(4) + 4(9)

  = 4(x - 2)² + 4(y - 3)² = -51 +  16  +  36

  = 4(x - 2)² + 4(y - 3)² = 1

4) Divide both sides by 4

   (x-2)^2+(y-3)^2=\dfrac{1}{4}

  • (h, k) = (2, 3)
  • r=\dfrac{1}{2}

6 0
3 years ago
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Ainat [17]

Answer:

3

Step-by-step explanation:

4 -1 = 3

8 0
3 years ago
Solve the function below for y when x=12.<br><br><br><br>y=−3x+20​
densk [106]

Answer:

y = -16

Step-by-step explanation:

y = -3(12) + 20

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6 0
2 years ago
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Lady bird [3.3K]

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Step-by-step explanation:

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