(09.07) Which of the following is not a factor involved in the
process of evaluating an observational study? (2 points)
A. Introduction
B. Results
C. Discussion
D. Bias

Derricks dog sitting and darlene's dog sitting are competing for new business. the companies ran the ads shown.which dog sitting service is more economic to use if you need 5 hours of service? explain.

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Find the value of x for which abcd must be a parallelogram -9-6x x-30