Xinyi bought a box of 20 cupcakes.12 of the cupcakes are chocolate cupcakes. What is the percentage of chocolate cupcakes

Can someone me and plz do the problem

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

For the chance to be team captain, the numbers 1-30 are put in a hat and you get two chances to pick a number, without replacement. which formula correctly shows how to find the probability that you choose the number 1 and then 2?