1. There are 5 purple pens, 4 blue pens, 3 red pens, and 6 black pens in a pen holder. Two pens are selected and pens are replaced. What is the probability
of selecting a blue pen and then a red pen?
I
a.
2
51
2
b.
54
C
27
d.

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.

5104.38 inches

step-by-step explanation: