7. there are approximately 1.2 x 108 households
in the u. s. if the average household uses 400
gallons of water each day, what is the total
number of gallons of water used by households
in the u. s. each day?

what would it be in scientific form

In a certain pentagon, the interior angles are a, b,c, d,e where a, b,c, d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Which is the graph of the following inequality?