Evaluate −2(2/5)^10x for x=15.
Enter your answer as a fraction in simplest form in the box.

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?

47: 4 aisha changed 1.45 + 2.38 to 1.5 + 2.4 in order to estimate the sum. what estimation method did she use?

Mackenzie buys 6 petunias and 8 marigolds. if she plants 2 flowers in each pot, how many pots dose she need?