Adinosaur fossil is 128 320 000 years old how can you express this age in scientific notation with the highest level of precision

Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14

If 25% of y is 30, what is 60% of y?

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?