Is the additive inverse of an integer always negative? Explain.​

Classify each polynomial by its degree and by its number of terms.

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of