30 pt and brainliest (pics are below)1. what is the surface area of this design2. if the cube has a side length of 5cm what is the volume of the cube3. what is the volume of this container

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle