Find the reference angle in radians: 7pi over 12

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Ten times the square of a non-zero number is eqaul to ninety times the number

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?