Find the solution set of each equality if the replacement set for each variable is {-10,-9,-,9,10}. 16-19? !

QUESTION 16

The given inequality is .

We first multiply through by the least common multiple, which is to get,

This simplifies to

We expand brackets to get,

We group like terms to get,

.

We now choose the values from the replacement set

{}.

The solution set is therefore

{}

QUESTION 17

We want to solve

We multiply through by 3 to get,

This simplifies to,

We now expand brackets to get,

We group like terms to get,

We now choose the values from the replacement set

{}.

The solution set is therefore

{}

QUESTION 18

We want to solve .

We group like terms to get,

.

We simplify to get,

.

We divide through by 0.4 to get,

.

This time the complete replacement is the solution set of the inequality because all the elements satisfies  .

The solution set is

 {}

QUESTION 19

We want to solve .

We group like terms to get,

This implies that,

We divide through by 7 to get,

We can rewrite this as .

We now choose the values from the replacement set {}. The solution set is therefore

{}

answer: a.   one is a factor of every whole number since every number is divisible by itself.