A ball rolls a distance of two meters in 40 seconds. What is the speed of the ball?

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

47 - 90 = 43

43 - 180 = x

x = 137

d

step-by-step explanation:

i used the pitagoras theoreme

sounds & other waves originate from any vibrating object