Mathematics, 04.07.2019 12:00 maciemarklin3522
The steps for determining the center and radius of a circle using the completing the square method are shown below: step 1 [original equation]: x2 β 10x + y2 + 12y = 20 step 2 [group like terms]: (x2 β 10x) + (y2 + 12y) = 20 step 3 [complete the quadratics]: (x2 β 10x + 25) + (y2 + 12y + 36) = 20 + (25 + 36) step 4 [simplify the equation]: (x2 β 10x + 25) + (y2 + 12y + 36) = 64 step 5 [factor each quadratic]: (x β 5)2 + (y + 6)2 = 82 step 6 [identify the center and radius]: center = (5, β6) radius = 8 what is the first incorrect step, and how can it be fixed? step 3, replace 25 with 5 and replace 36 with 6 step 4, replace 64 with 81 step 5, replace β 5 with + 5 and replace + 6 with β 6 all steps are correct.
Answers: 1
Mathematics, 21.06.2019 13:00
Remmi wrote the equation of the line y=β
(x+2) he solved for x and got x=3y-2 which of the following is an equivalent equation for x? a.x=y-11/3 b.x=y+7/3 c.x=3(y-β
) d.x=3(y+β
)
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Mathematics, 21.06.2019 14:30
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Mathematics, 21.06.2019 16:30
Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k
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The steps for determining the center and radius of a circle using the completing the square method a...
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