Mathematics, 27.03.2020 20:33 21marmong
Mikhael, Hema, and 5 friends will help run the event. They will wear either a red shirt or a red baseball cap during the event. They want to spend exactly $40. Shirts cost $8 and caps cost $4 each. Write a system of equations to model the situation. Graph the system using the grid at the right. What is the solution and what does it represent?
Answers: 3
Mathematics, 21.06.2019 16:30
Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.
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Mathematics, 21.06.2019 19:00
What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 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.
Answers: 3
Mathematics, 22.06.2019 00:50
C. using a standard deck of 52 cards, the probability of selecting a 4 of diamonds or a 4 of hearts is an example of a mutually exclusive event. true of false
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Mikhael, Hema, and 5 friends will help run the event. They will wear either a red shirt or a red bas...
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