For regular polygons all internal angles have the same The size of a single internal angle may be found using the formula:

Graph the inequality \(3x - y \leq 9\) on a coordinate plane.

ron has a density of \( 7.87 \mathrm{~g} / \mathrm{cm}^{3} \). Calculate the mass of an iron sample with a volume of \( 4.09 \times 10^{-5} \mathrm{~m}^{3} \).

A sample of 4 different calculators is randomly selected from a group containing 11 that defective and 25 that have no defects. What is the probability that at least one of the calculators is defective?

Given \( g \) and \( h \) as defined below, determine \( g+h, h-g, g h \), and \( \frac{h}{g} \). Using interval notation, report the domain of each result. \( g(x)=\frac{x+2}{x^{2}-36} \) and \( h(x)=\frac{-5 x+7}{x^{2}-36} \) (a) \( (g+h)(x)=\square \) Domain of \( (g+h)(x): \) (b) \( (h-g)(x)=\square \) Domain of \( (h-g)(x): \) (c) \( (g h)(x)=\square \) Domain of \( (g h)(x): \square \) (d) \( (x)=\square \) Domain of \( \left(\frac{h}{g}\right)(x): \)

1) \( \frac{\left(a^{2} b^{7}\right)^{6}}{\left(a^{2} b^{3}\right)^{4}}= \) 2) \( \frac{x^{2} x^{9} y^{3} y^{9} z^{5} z^{4}}{z^{3} y^{12} x^{30}} \) 3) \( \left(\frac{\left(a^{3} b^{4}\right)^{3}}{a^{4} a^{3} b b^{5}}\right)\left(b^{2} a^{9}\right) \)