Abag contains 6 blue cards, 4 green cards, 5 red cards, and 7 yellow cards. you randomly choose a card. how many possible outcomes are there?

Can someone me with this problem . show your work .

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how