An aquarium at a pet store has 18 black neon tetra fish in it . a customer buys 12 black neon tetra fish at the same time the store clerk adds 7 more black neon tetra fish are in the aquarium now ?

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?