What is the slope of a line perpendicular to the line whose equation is 4x-10y=40.

‼️‼️‼️10 points‼️‼️‼️ me it’s important‼️‼️‼️‼️‼️

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!

When a number is decreased by 7%,the result is 74. what is the original number to the nearest tenth