If M={prime integers between 1 and 11} and N={factors of 12}, find:'
(i) MuN
(ii)MnN

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?