Kai has begun to list, in ascending order, the positive integers which are not factors of 240. What is the sixth number on Kai's list?

HELP ME PLS ASAP!

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Write the following as a base and exponent

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.