Mathematics, 16.06.2021 09:00 justicejesusfreak
Quan sát điểm thi môn Toán cao cấp của 10 sinh viên ngẫu nhiên trong lớp, ta được kết quả là: 5, 6, 7, 5, 9, 5, 6, 7, 4, 8. Độ lệch chuẩn hiệu chỉnh của điểm thi toán cao cấp ở mẫu trên là:
Answers: 1
Mathematics, 21.06.2019 16:30
Arandom sample of 150 high school students were asked whether they have a job. the results are shown in the table. have a job do not have a job male 48 35 female 41 26 select a ord or phrase from the drop-down menus to correctly complete the statements describing the association.
Answers: 1
Mathematics, 21.06.2019 21:50
5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%
Answers: 2
Mathematics, 21.06.2019 22:10
Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.
Answers: 1
Quan sát điểm thi môn Toán cao cấp của 10 sinh viên ngẫu nhiên trong lớp, ta được kết quả là: 5, 6,...
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