If a solution to a linear system of equations is no solution, then what must be true about the graph of the system?
a-the lines are perpendicular
b-the lines are parallel
c-the lines coincide
d-the lines intersect at only one point

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

Somone me i want to know what 18 hours out of 24 hours in a fraction

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years