Mathematics, 09.12.2020 18:20 LonelyKai
Consider a system of linear equations Ax=b. Why is it essential for the coefficient matrix of the system A to have a non-zero determinant |A|≠0 in order to be able to find a unique solution that satisfies all of the equations simultaneously?
Answers: 1
Mathematics, 21.06.2019 20:00
Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2
Answers: 2
Mathematics, 21.06.2019 23:00
What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?
Answers: 1
Mathematics, 22.06.2019 02:20
Stu and ambrose are working together on a study of whether diet is related to students' mental health. first, they randomly select 10 students from the student center and 10 students from the office of counseling and psychological services. then, they ask students to rate their diet in terms of healthiness on a scale of 1-100 before completing a 20-item mental health survey. a) name one of the constructs being studied b) how was the construct you named above operationally defined in this experiment? e) was the variable you described above their independent variable, their dependent variable, or a controlled variable? d) what is a confounding variable? what is a potential confound in this study?
Answers: 3
Consider a system of linear equations Ax=b. Why is it essential for the coefficient matrix of the sy...
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