Alarge rock has a mass of 9,000 grams. what is the mass of the rock in kilograms ?

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry