Answer:
+3 every time or the total?
Or is it 18? U specify which
Answer:
Every 10 seconds
Step-by-step explanation:
The bob crosses its midline whenever cos(2π(t-2)/20)=0.
Since cosθ=0 when θ=±π/2 + 2πn, we can find then the bob crosses its midline by solving:
2π(t-2)/20 = ±π/2 + 2πn
t-2 = ±5+20n
The solutions are when t = -3, 7, 17, 27, 37, ...
Therefore, the bob passes its midline every 10 seconds.
Answer:
Step-by-step explanation:
Combine like terms
6) -4f - 9 -f + 15 =<u> -4f - f</u> <u>-9 +15</u>
= -5f + 6
7) 1.5g - 10 + 6.5g - 3 = <u>1.5g + 6.5g</u> <u>- 10 - 3</u>
= 8.0g -13
= 8g - 13
8)


9) 4.2j + 6.7j - 5j - 5 = 10.9j - 5j - 5
= 5.9j - 5
Answer:
z
≥
−
8
Step-by-step explanation: