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, 22.06.2019 00:30, sanfordl
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
Answers: 2
Mathematics, 22.06.2019 01:00, wedestttefera
Urgent? will give brainliest to the first correct answer what is the area of the figure?
Answers: 3
The steps for determining the center and radius of a circle using the completing the square method a...
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