How do u do this im not sure

Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo

Find all the angles that satisfy the equation cos(θ)=32

What is the hypotenuse of a triangle with 4 ft and 5 ft