Answer:
3*7=21
6*7=42
so 3*7 is 1/2 of 6*7
Step-by-step explanation:
Answer:
t = 130s
Step-by-step explanation:





If the speed signal sent was actually less, meaning that it would take more time to signal arrives from Earth to Mars. The lower the speed, the higher the time.
I. about 70 m; ii. 8 s; iii. because the line is straight and and going up at a constant rate; I hope I helped with the first three questions:)
Can you make it w bit more detailed please love?