Round to the nearest hundredth 7.381

Lassify the function as linear or quadratic and identify the quadratic, linear, and constant terms. f(x) = (3x + 2)(−6x − 3) linear function; linear term: −21x; constant term: −6 linear function; linear term: −18x2; constant term: −6 quadratic function; quadratic term: 6x2; linear term: 24x; constant term: −6 quadratic function; quadratic term: −18x2; linear term: −21x; constant term: −6

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'