The speed in miles per hour of each of sams last pitch were recorded (82,78,83,80,75,82,79,80,83,81) Find the variance

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

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!

Find the measure of vu. enter the answer as a number.