Mathematics, 03.02.2020 06:55 quay84
Quick math ! : ((
there are 500 teachers in a school district. the district superintendent wants to determine which proposed school calendar for the next school year is preferred by the majority of teachers in the district.
which of the following would be the most appropriate sampling technique?
a. a survey of every teacher at the five elementary schools in the district.
b. a survey of 10 random teachers from each of the 10 district schools.
c. a survey of 20 random teachers from each of the 10 district schools.
d. a survey of every teacher who has taught in the district for at least 10 years.
Answers: 3
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Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2
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Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coup?
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Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6
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Quick math ! : ((
there are 500 teachers in a school district. the district superintend...
there are 500 teachers in a school district. the district superintend...
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