10. según la conocida leyenda sobre el origen del ajedrez, el rey balkib en agradecimiento al juego que su amigo el brahman hindú sissa le enseñó, decidió premiarlo colocando un grano de trigo en la 1a. casilla, dos en la 2da, cuatro en la 3a., y así sucesivamente. ¿cuántos granos de trigo se necesitan para llenar la 13a. casilla?

24

step-by-step explanation:

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

x-150=475   x=625

step-by-step explanation:

if the bike after the sale ($150) is $475 then just simply add 150 to 475.