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Andrews [41]
3 years ago
8

A painter mixes 6 parts red paint and 8 parts yellow to make dark orange paint. Which equation can the painter use to calculate

the amount of red paint, R, that is needed to mix with a given amount with yellow paint, Y? A. R= 6/8 = Y, B. R=6/8- Y, C. R=3/4y, D. R= 4/3Y.
Mathematics
1 answer:
Hunter-Best [27]3 years ago
7 0
Red : Yellow
   6   :  8
 (÷6)  (÷6)
   1   : 8/6 
   1   : 4/3

therefore, R = 4/3Y

Answer: R = 4/3Y
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Step-by-step explanation:

The equation of a circle in the general form is:

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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.

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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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