Answer: 
<u>Step-by-step explanation:</u>


Insert x = 13 and y = 1:
x² + 2hxy + 12y² = 0
(13)² + 2(13)(1) + 12(1)² = 0
169 + 26h + 12 = 0
26h + 181 = 0
26h = -181




When two line cross each othe vertical angles are formed
Answer:
A perfect square is a number whose product value is an integer. If you change any integer you will always get a even number.
Step-by-step explanation:
Answer:
Step-by-step explanation:
315/3
3miles=315cal
1mile = 105cal
105*10=1050cal