Mathematics, 24.12.2020 01:00 ninja12302
Complete the statements to describe the graph that represents the equation 0.4(x + 3) = (y – 6)2.
The vertex is
.
The directrix is
.
The focus is
.
The focal width is
.
Answers: 3
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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.
Answers: 3
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The curved part of the figure is the semicircle what is the best approximation for the area of this figure
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Complete the statements to describe the graph that represents the equation 0.4(x + 3) = (y – 6)2.
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