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3 years ago

12

(2-i radical 2) ^2 can someone help me please

1 answer:

krek1111 [17]3 years ago

8 0

I'm confused by what you're saying (plz describe more thoroughly)

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Which of the following is an equation of the circle with a center at (-1,4) and a radius of 2√5 units? plss pahelp naman

Ksivusya [100]

Answer:

Option A

Step-by-step explanation:

The standard form of an equation of a circle is represented by the formula $(x-h)^2+(y-k)^2 = r^2$ . Remember that $(h,k)$ is the center and $r^2$ is the radius squared.

So, the equation of the circle must be $(x+1)^2 +(y-4)^2 = 20$ . Complete the square to change the form of the equations listed in the options and find the one that is equal.

Let's try this with option A. Move the constants to the right side, then use the completing the square method to place the equation in standard form:

$x^2 + y^2 +2x -8y -3 = 0\\x^2 + y^2 +2x-8y = 3\\x^2 + 2x +y^2-8y = 3\\(x^2 +2x+1)+(y^2-8y +16)=3+1+16\\(x+1)^2 + (y-4)^2=20$

The end result matches with the equation determined before, so option A is the answer.

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3 years ago

Travis paints 1/6Of the fence surrounding his farm each day how many days will it take him to paint 3/4 of the fence

mylen [45]

It will take Travis 5 days to paint 3/4 of his fence

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3 years ago

Read 2 more answers

What are the first 5 terms?

lutik1710 [3]

Answer:

please can you specify which topic exactly is it on Arithmetric or Geometric Progression or on another topic

please kindly specify and send the question back

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Step-by-step explanation:

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2 years ago

Read 2 more answers

What are the are and perimeter of the triangle?

fenix001 [56]

Answer:

First option is correct answer.

Step-by-step explanation:

Area = 4x - 10

Perimeter = x + 8

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3 years ago

A path 3 m wide runs around the inside of a square park inside 60 M.FIND THE AREA OF THE PATH.pls

jok3333 [9.3K]

Answer: 180 i believe

Step-by-step explanation:

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2 years ago