Answer:
None repeating X on the table is a function, if it repeats than not a function.
Step-by-step explanation:
I am not able to see the table but if X has repeating points then it is not a function. If it repeats the Y point then that is ok.
Answer:
1.29 s
Step-by-step explanation:
h = -490t² + 1260t
810 = -490t² + 1260t
490t² - 1260t + 810 = 0
49t² - 126t + 81 = 0
(7t - 9)² = 0
7t - 9 = 0
t = 9/7
t ≈ 1.29
109
21.8x10=218
218 divided by 2 = 109
When 10 by anything you just write the amount of 0 so if it was 10^12 i would write 12 0s so 10^6 1,000,000