In ΔCDE, \overline{CE} CE is extended through point E to point F, m∠CDE = (3x-14)^{\circ}(3x−14) ∘ , m∠DEF = (8x-12)^{\circ}(8x−12) ∘ , and m∠ECD = (3x+12)^{\circ}(3x+12) ∘ . What is the value of x?

Given the box plot, will the mean or the median provide a better description of the center? box plot with min at 10.5, q1 at 11.5, median at 12.5, q3 at 13.5, max at 15

Which is the completely factored from of xy^3-x^3y

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.