There are 4 red beads, 8 yellow beads, and 2 pink beads in a container. if 1 bead is picked random from the container, what are the chances that it will be red?

Can some one me, i’ve been asking for so long

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

Can someone tell me if these are correct?