At an art show , there are 7 groups of pairings with 6 paintings in each group. How many painting are there in all

Afarmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. each bag of soil covers 20 square yards. how many bags should the farmer purchase? (4 points) 1 bag 2 bags 3 bags 4 bags

Through which points should a line of rotation be placed to create a cylinder with a radius of 3 units

Me with these questions , i don’t understand scientific notation!