20% of 65 = 65 * 1/5, which is 13. so 20% of 65 is $13. so a discount of 20% = 65-13 which is $52
25
Square root of 25 is 5
4 625/1,000 to 4 25/40 to 4 5/8
It’s 3 less then measure of its complement 6°
(4+5i)(4-5i)=(4)²-(5i)²=16-25(i)²=16-25(-1)=16+25=41