Answer:yk i’m looking for the answer too, i can’t find it
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
um the l l means the total value ignoring the signs
and you do the step by step, but I forgot how exactly to do it, sorry!
I think this is right tho
Answer:
2 hours 40 minutes
Step-by-step explanation:
If you add 3 hours, it will be 7:45
You subtract 20 minutes to get to 7:25
3 hours - 20 minutes = 2 hours 40 minutes
Answer:
za/2: Divide the confidence level by two, and look that area up in the z-table: .95 / 2 = 0.475. ...
E (margin of error): Divide the given width by 2. 6% / 2. ...
: use the given percentage. 41% = 0.41. ...
: subtract. from 1.
Step-by-step explanation:
Frequency of a mass-spring system is:
f = √(k/m) / (2π)
Given f = 2/π Hz and m = 20 kg:
2/π Hz = √(k / 20 kg) / (2π)
4 Hz = √(k / 20 kg)
16 s⁻² = k / 20 kg
k = 320 kg/s²
k = 320 N/m
If the 20 kg mass is replaced with an 80 kg mass, the frequency is:
f = √(320 kg/s² / 80 kg) / (2π)
f = √(4 s⁻²) / (2π)
f = 2 Hz / (2π)
f = 1/π Hz
