Solve for t. 150=1/2gt2

√30

Step-by-step explanation:

g=9.8m/s^2/approximately g=10m/s^2

for t,

150=1/2×10×t^2

150=5×t^2

150/5=t^2

t=√30s

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.

where is the rest of the

step-by-step explanation: