Tabit ibn qorra (826 - 901) invented the following rule for finding amicable numbers if p = 3 2^n - 1 q = 3.2^n - 1 - 1 r = 9.2^2n - 1 - 1 are three prime numbers, then 2^n pq and 2^n r are pair of amicable number can you give two pairs of amicable numbers bigger than 100 using qorra's rule.

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

Me #1 using vocabulary words, including the word “congruent”, state why the measure of angle d is 120 degrees. #2 what is the measure of angle e and why?

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml