Mathematics, 28.06.2020 02:01 EvankzGao
The Highway Safety Department wants to study the driving habits of individuals. A sample of 41 cars traveling on the highway revealed an average speed of 60 miles per hour and a standard deviation of 7 miles per hour. The population of car speeds is approximately normally distributed. Determine a 90% confidence interval estimate for the speed of all cars.
Answers: 3
Mathematics, 21.06.2019 16:00
Which fraction is not equivalent to 8/12 a. 2/3 b. 24/36 c. 4/10 d. 6/10
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Mathematics, 21.06.2019 18:00
Polygon hh is a scaled copy of polygon gg using a scale factor of 1/4. polygon h's area is what fraction of polygon g's area?
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Mathematics, 21.06.2019 19:00
How can you tell when x and y are not directly proportional?
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Mathematics, 21.06.2019 20:30
If m∠abc = 70°, what is m∠abd? justify your reasoning. using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°. using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°. using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality. using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.
Answers: 2
The Highway Safety Department wants to study the driving habits of individuals. A sample of 41 cars...
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