LongSong = 286s
LongSong = 2 * ShortSong - 126s
=>
2 * ShortSong - 126s = 286s
2 * ShortSong = 286s + 126s
2 * ShortSong = 412s
ShortSong = 206s
Answer:
32
Step-by-step explanation:
9514 1404 393
Answer:
see below
Step-by-step explanation:
The image you posted does not let us "click and drag." The angle bisector you create will cut the given 74° angle into two (equal) 37° angles. Your final image may look something like this:
Answer: 68
Step-by-step explanation:
As per given , we have
Margin of error : E= 0.10
Critical z-value for 90% confidence interval : 
Since , the estimate of true proportion is unknown , then
The formula to find the sample size :-

The required minimum sample size= 68
Answer:
63 kilometers per hour for train A and 83 kilometers for train B
Step-by-step explanation:
Same beginning
- Train A: 3 hours to North
- Train B: 2 hours and 15 minutes to South
but train B <em>2</em><em>0</em><em> </em><em>kilometers </em><em>per hour </em><em>faster</em>
15 minutes from 20 kilometers per hours are 5 kilometers
So, train B is 45 kilometers travel more far than train B.
= 360 kilometers - 45 kilometers
= 315 kilometers ÷ 5 hours
= 63 kilometers per hours
Hope it's right><