What substitution should be used to rewrite 4x^4-21x^2+20=0 as a quadratic equation
1 answer:
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We know that
the scale is <span>is 1/2 inch = 4 feet
using a graph tool
</span><span>the approximate measurements in the drawing are
</span>5 cm x 4 cm
convert to in
5/2.54--------> 1.97 in
4/2.54------> 1.57 in
convert drawing to actual
if 0.5 in---------> 4 ft
1.97in-------> X
X=1.97*4/0.5------> X=15.76 ft
if 0.5 in---------> 4 ft
1.57 in-------> X
X=1.57*4/0.5------> X=12.56 ft
<span>the approximate area of Quinto's bedroom is 12.56*15.76=197.95 ft</span>²
the answer is
the option C)192 ft²
the scale is <span>is 1/2 inch = 4 feet
using a graph tool
</span><span>the approximate measurements in the drawing are
</span>5 cm x 4 cm
convert to in
5/2.54--------> 1.97 in
4/2.54------> 1.57 in
convert drawing to actual
if 0.5 in---------> 4 ft
1.97in-------> X
X=1.97*4/0.5------> X=15.76 ft
if 0.5 in---------> 4 ft
1.57 in-------> X
X=1.57*4/0.5------> X=12.56 ft
<span>the approximate area of Quinto's bedroom is 12.56*15.76=197.95 ft</span>²
the answer is
the option C)192 ft²
Circle's Standard Form Equation:
First you need to substitute the C (0,-2) in the equation, where: Xo = 0 and Yo = -2;
Now you substitute the Point (3,-5) values in the last expression, where: X = 3 and Y = -5;
Now you get the R^2 value and substitute in the equation that you found putting the C values on it:
Here is your standard form equation of the circle.
First you need to substitute the C (0,-2) in the equation, where: Xo = 0 and Yo = -2;
Now you substitute the Point (3,-5) values in the last expression, where: X = 3 and Y = -5;
Now you get the R^2 value and substitute in the equation that you found putting the C values on it:
Here is your standard form equation of the circle.