Kwan bought three rolls of regular wrapping paper with 6.7 square meters of paper each. he also bought a roll of fancy wrapping paper containing 4.18 square meters. how much paper did he have altogether?

He had 24.28 m².

Step-by-step explanation:

1. He bought 3 rolls of regular wrapping paper with 6.7 m². Then the total of this paper is:

2. He also bought a roll of fancy wrapping with 4.18 m². Therefore, to calculate the amount of paper he had together (which you can call ), you must add 20.1 m² and 4.18 m², as you can see below:

the expected value of the random variable : 0, 1 and 2

step-by-step explanation: