What will be the dimensions of the new matrix formed by multiplying a 3 x 4 matrix and a 4 x 1 matrix?

Standard deviation of 19,29,21,22,23

What’s 8y+48 and factor each expression completely

Marion has a bicycle that she is planning to take for a ride. the rim of the rear wheel lies 41 cm from the center of the wheel. the tire itself has a thickness of 3 cm. in order for marion to ride her bicycle 96,712 cm approximately how many rotations will the rear wheel make?