4 years ago

The fraction 7/4 is known as a(n) __________ fraction.

1 answer:

6 0

7/4 is an improper fraction.
An improper fraction will have a numerator (top number) greater then the denominator (bottom number)

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The general form of a circle is given as x^2+y^2+4x - 12y + 4 = 0. A) What are the coordinates of the center of the circle? B) W

Alex_Xolod [135]

Answer:

center = (-2, 6)

radius = 6

Step-by-step explanation:

<u>Equation of a circle</u>

$(x-a)^2+(y-b)^2=r^2$

(where (a, b) is the center and r is the radius)

Therefore, we need to rewrite the given equation into the standard form of an equation of a circle.

Given equation:

$x^2+y^2+4x-12y+4=0$

Collect like terms and subtract 4 from both sides:

$\implies x^2+4x+y^2-12y=-4$

Complete the square for both variables by adding the square of half of the coefficient of $x$ and $y$ to both sides:

$\implies x^2+4x+\left(\dfrac{4}{2}\right)^2+y^2-12y+\left(\dfrac{-12}{2}\right)^2=-4+\left(\dfrac{4}{2}\right)^2+\left(\dfrac{-12}{2}\right)^2$

$\implies x^2+4x+4+y^2-12y+36=-4+4+36$

Factor both variables:

$\implies (x+2)^2+(y-6)^2=36$

Therefore:

center = (-2, 6)
radius = √36 = 6

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2 years ago

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OLEGan [10]

Answer:

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3 years ago

A rectangular painting is 2 feet long and 56 foot wide. Which is the area of the painting?

Novay_Z [31]

Answer:

I'm pretty positive it should actually be 112.

Step-by-step explanation:

You find the area of a rectangle by multiplying length times width. I don't know how else to explain that all of the answers are incorrect.

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Step-by-step explanation: find attached picture for explanation

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