X is twenty
2x+6x+20=180
8x=160
X=20
Answer:
Use this formula for these kinda things.
Step-by-step explanation:
Remember The z is the hypathonous, it means the biggest side.

where Z is going to be C
put this all together

put it into calculator, means 373=

therfore take the square root, it will be

which it will be 19.31
Answer:
the third one is the correct answer
Answer:

Step-by-step explanation:
The scientific notation:

We have:

Answer:
27/10, or 2 7/10 kg
Step-by-step explanation:
We first have the expression 15/100*18, which simplifies to 3/20*18. If we multiply and simplify, we get 27/10, or 2 7/10