What is the probability of rolling a 3 on a number cube and tossing tails on a coin?

Number cube: 1/6 Tossing tails on a coin: 1/2

A number cube is 6 sided, so the probability would be 1/6.

A coin has 2 sides, heads and tails, so tossing tails would be 1/2.

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.