Please help its 20 points

Find the perimeter of the following shape, rounded to the nearest tenth:

answers: 19.1 , 20.39, 22.8 , 24.4

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?