What is 12.8×3/4 pls answer this asap

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell