Whats 39- 19??? mathmatics

my dad is in the hospital rn sooo if im r u d e srry

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path

Cal's go cart has a gas tank with the dimensions shown below. he uses a gas can that holds 11 gallon of gas, to fill the go cart tank. 11 gallon = 231 inches^3 how many full gas cans will it take to fill the go cart's gas tank?