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MaRussiya [10]
1 year ago
6

3/14 divided by 2/7 equal

Mathematics
1 answer:
Aleks [24]1 year ago
3 0

Sandra, this is the solution:

3/14 / 2/7

We use the multiplicative inverse or reciprocal and convert the division in a multiplication, as follows:

7/2 is the reciprocal or multiplicative inverse of 2/7

3/14 * 7/2

And now:

3 * 7 = 21 in the numerator

14 * 2 = 28 in the denominator

21/28 that we can simplify, this way:

21/28 = 3/4

3/14 divided by 2/7 equal to 3/4

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the equation of a circle in general form is x squared + y squared + 20x + 12 y + 15 equals 0what is the equation of the circle i
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Answer: (x+10)^2+(y+6)^2=121

Step-by-step explanation:

The equation of a circle in the general form is:

 ax^{2}+by^2+cx+dy+e=0

The equaton of  a circle in standard form is:

(x-h)^2+(y-k)^2=r^2

Where the center is at <em>(h, k)</em> and <em>r</em> is the radius

To write the equation of a circle from general form to standard form, you must complete the squaare, as you can see below:

1- Given the equation in general form:

x^{2}+y^2+20x+12y+15=0

2- Complete the square:

-Group the like terms and move the constant to the other side.

- Complete the square on the left side of the equation.

- Add the same value to the other side.

Then you obtain:

(x^{2}+20x)+(y^2+12y)=-15\\(x^2+20x+(\frac{20}{2})^2)+(y^2+12y+(\frac{12}{2})^2)=-15+(\frac{20}{2})^2+(\frac{12}{2})^2\\\\(x+10)^2+(y+6)^2=-15+100+36\\(x+10)^2+(y+6)^2=121

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Step-by-step explanation:

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