What is the slope of the line that passes through the points (10, 5) and (15, 20) ?

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?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

The square root of 9x plus 7 plus the square rot of 2x equall to 7