Scrie numarul 13421 ca: a. suma de doua numere naturale; b. diferenta de doua numere naturale;

Solve the system of equations. y= 2x y= x^2 - 15

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

Alice is paying her bill at a restaurant. but tax on the cost of a male is 5%. she decides to leave a tip 20% of the cost of the meal plus the tax