(2 points) let u = {1,2,3,4,5,6}. determine x({2,3,5}) even integer and an odd integer is odd 12. (10 points) give a direct proof that the sum of an 13. (10 points) give an indirect proof that if n3 is even, then n is even. 14. (10 points) give a proof by contradiction that if 3n 2 is odd, then n is odd m |n] m and n, we have mn 15. (10 points) give a proof by cases that for any integers

41/17 as a decimal rounded to the nearest hundredth

Which statement about 6x2 + 7x – 10 is true?

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?