An element with a mass of 550 grams decays by 11.3% per minute. To the nearest tenth of a minute, how long will it be until there are 50 grams of the element remaining?

What is the distance between point a and b

As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?

If jklm is a trapezoid, which statements must be true?