I dont understand! What is this question asking ?

Question

Substitute 22 in for k. Is the number sentence true or false ?

Subsitite 78 in for y. Is the number sentence true or false

Answer 1

Substitute 22 in for k. Is the number sentence true or false ?

Subsitite 78 in for y. Is the number sentence true or false

Here is an example of what I believe you are asking.

Is this number sentence true or false: 3x-4=8 when x=4

Here is how you would solve this problem.

3x-4=8

3(4)-4=8

12-4=8

8=8

In this case, the number sentence is true.

I hope this helps you! Good luck!

Answer 2

No one can answer your question because you didn't tell us what the number sentences are. But here's how you do them.

Consider a number sentence like 10 < y < 20. For the number sentence (inequality) to be true, y must be greater than 10 but less than 20. Let's try y = 16. That means to put a 16 into the equation in place of the y:

10 < y < 20

10 < 16 < 20

10 is less than 16 and 16 is also less than 20, so the number sentence is true when y = 16. Now let's try y = 26:

10 < y < 20

10 < 26 < 20

10 is less than 26 but 26 is NOT less than 20, so the number sentence is false when y = 26. The number sentence will only be true when y is between 10 and 20.