So basiclly you will end up getting the wrong answer. For example 234+23.
If you lined it up incorrectly you might get 464. It is actually 257. This is wy you should line it up correctly.
~JZ
Hope it helps! Good Luck!
Answer:
1.25 x 10⁷ km
Step-by-step explanation:
Distance QR = √(3.5 x 10⁶)² + (1.2 x 10⁷)²
= √12.25 x 10¹² + 1.44 x 10¹⁴
= √10¹² (12.25 + 144)
= 10⁶ x 12.5
= 1.25 x 10⁷ km
