Verify this closure property of subtraction x= -4/5 , y= 1/-10​

x - y is also a rational number. Hence satisfies the closure property.

Step-by-step explanation:

Closure property of subtraction states that for any two integers a and b, (a - b) must also be an integer.

Here x and y are rational numbers. so x - y must also be rational to satisfy the closure property.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

h= 12 inches

step-by-step explanation: