Mathematics, 11.12.2021 01:00 kennyg02
Find the Error. A student solved the equation 3(-4 + x) - 5x =7x + 15.find her mistake and correct it. the student says its 1. 3(-4 + x) - 5x = 7x + 15, 2. -12 + 3x - 15x = 7x + 15, 3. -12 - 12x = 7x + 15, 4. -12 - 12x +12x =7x + 12x + 15, 5. -12 = 19x + 15, 6. -12 - 15 = 19x + 15 - 15, 7. -27 = 19x. and the student says the answer is: x = -1,8/19
Answers: 2
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Write 5 numbers that round to 740 when rounded to the nearest 10
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Write a real-world solution that can be represented by the equation y = 7x be sure to explain what the variables represented in the solution
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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
Find the Error. A student solved the equation 3(-4 + x) - 5x =7x + 15.find her mistake and correct i...
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