A bird that was perched atop a 15-foot tree dives down six feet to a branch below. How the bird's new location?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Which table represents a linear function? i'll give brainliest to first answer ^'^