Answer:

Step-by-step explanation:
We know that since angles in a triangle add up to 180º, the remaining angle must be 45º.
So the side with length
must be equal to the side with length
. That is:

Now, by Pythagoras:

Answer: -8
Step-by-step explanation:
Answer:
9 Months
Step-by-step explanation:420 - 150 = 270
270/30 = 9