En una fiesta, se les preguntaron las edades a 12 personas y se obtuvo lo siguiente:16; 18; 17; 17; 16; 19; 18;20; 18; 16; 21; 18 ¿Cuál es la moda? *

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

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?

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9