One minute later at 8:01pm. One lighthouse will flash 3 times (at 20, 40 and 60 seconds)...the other will flash twice (at 30 and 60 seconds). So they will both flash 60 seconds later, at 8:01
Answer:
46
Step-by-step explanation:
Multiply the two by both numbers inside the parenthesis
2 x 6 = 12 2 x 15 =30
Add those numbers together
12 + 30 = 42
Then add the remaining four to that number
4 + 42
I feel like you just want the answers right now. Tell me later if u want explanations.
1. D 2. J 3. B 4. F 5. D 6. G 7. B 8. J 9. B 10. G
X^2 - xy + xy - Y^2
=
X^2 - Y^2
