Express the negations of each of these statements so that all negation symbols immediately precede predicates. a. ∃z∀y∀xt (x, y, z) b. ∃x∃yp (x, y) ∧ ∀x∀yq(x, y) c. ∃x∃y(q(x, y) ↔ q(y, x)) d. ∀y∃x∃z(t (x, y, z) ∨ q(x, y))

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.

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

Complete the equation of the live through (-1,6) (7,-2)