Answer:
69 tht is the answer if you work it out
Step-by-step explanation:
The answer is C because you can have a triangle with 5,9,n 5,10,n 9,10,n and 5,10,9
The reason why is because the sum of two sides is always larger than the value of the third side.
I hope that this helps.
Is there a picture or something because how many tiles does he wanna make
The best way I can explain the elimination method is, it's a method where you either add or subtract equations in order to get rid of a variable.
Answer:

Step-by-step explanation:
Given that,

We need to find the value of cos x.
We know that,

Using the above relation,

So, the value of cos x is equal to
.