High mass stars are more massive produce more energy burn brighter and have shorter life cycle than low mass stars
true or false

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form