Is it possible to construct a triangle with side lengths of 11 cm, 15 cm, and 21 cm? why or why not?

Can someone me i’m confused. will give brainliest and a whole bunch of points

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)