A single piece of wire has been bent to form the perimeter of a square, with side length of 2 cm. The wire is straightened out and then bent
again to form an arc of a circle of radius 4 cm. The wire just forms the
arc, not the radii. Calculate the angle, in radians, that the are subtends
at the centre of the circle.

Can you me find the missing length. i attached an image.

What is the angle measure, or angle of depression, between this bird and the bird watcher?

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?