Alex and charlene are playing a card game, where each card has a value, he has a total of -16.5 points . what was his cards value before he doubled it .

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?