an unfair coin has probability 0.3 of landing heads. the coin is tossed four times. what is the probability that it lands heads at least once

9

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

6 cm

step-by-step explanation:

10.4 inches

step-by-step explanation:

2x2x2.6