(i) How are the coordinates of the
Mathematics, 15.11.2020 14:00, elissiashontelbrown
The negative x- and y-axes are
tangents to a circle, C.
(i) How are the coordinates of the
centre of C related?
The line l is the tangent to C at the point
P(-8, -9) on the circle. The centre of
C lies above and to the right of P.
(ii) Find the equation of C.
(iii) Find the equation of l.
Answers: 2
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Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
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Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x
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The negative x- and y-axes are
tangents to a circle, C.
(i) How are the coordinates of the
(i) How are the coordinates of the
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