Mathematics, 02.12.2019 08:31 briannmalcolmp3l4pz
Aschool has 300 eighth-grade students and 200 ninth-grade students. the secretary randomly selects 12 eighth-grade students and 8 ninth-grade students to obtain a sample of size 20. what kind of sampling is this?
simple random sampling
stratified random sampling
systematic sampling
convenience sampling
Answers: 2
Mathematics, 21.06.2019 23:00
36x2 + 49y2 = 1,764 the foci are located at: (-โ13, 0) and (โ13,0) (0, -โ13) and (0,โ13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)
Answers: 1
Mathematics, 22.06.2019 02:30
Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?
Answers: 2
Mathematics, 22.06.2019 04:30
The function f(x) = 1/6(2/5)x is reflected across the y-axis to create the function g(x). which ordered pair is on g(x)? a. (-3, 4/375) b. (-2, 25/24) c. (2, 2/75) d. (3, -125/48)
Answers: 2
Mathematics, 22.06.2019 04:30
What states a rule using variables expression term or formula
Answers: 1
Aschool has 300 eighth-grade students and 200 ninth-grade students. the secretary randomly selects 1...
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