What is the sum of the arithmetic series 18 sigma t=1 (5t-4) a. 783 b. 1,566 c. 819 d. 86

Angela rode his bike around a bike trail that was 1/4 of a mile long he rode his bike around the trail 8 * angelo says he wrote a total of 8/4 miles to russell says he's wrong and he actually and says that he actually wrote to my who is corrupt use words and trying to explain how you know.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?