Mathematics, 12.11.2020 14:00 myhomeacc32
Two ponds can be seen from a tower. The angles of depression to pond A and Pond B are angle 12 degrees and angle 19 degrees respectively, form a height of 22m on the tower. The measure of the angle between the lines of sight to the ponds is angle 78 degrees. Find the distance between the ponds.
Answers: 1
Mathematics, 21.06.2019 20:30
Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.
Answers: 1
Mathematics, 22.06.2019 03:30
Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$â˘79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$â˘19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$â˘75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$â˘21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let Îź1Îź1 be the true mean repair cost for type i ovens and Îź2Îź2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.
Answers: 2
Mathematics, 22.06.2019 05:00
There are 2 ones, 1 five,3tens, and 1 twenty. if there are 28 bills in her wallet, what would you predict is the approximate value of all the bills
Answers: 1
Two ponds can be seen from a tower. The angles of depression to pond A and Pond B are angle 12 degre...
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