Please help Which set of angle measures could be the measures of the interior angles of a triangle?

A.) 60°, 45°, and 70°
B.) 30°, 859, and 25°
C.) 55°, 90°, and 35°
D.) 110°. 15°, and 45°​

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

What are the excluded values? m+5/mn+3m

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.