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larisa86 [58]
3 years ago
9

If a train leaves at a station at 2315 hours and arrives at 0330 hours what is its journey time

Mathematics
2 answers:
Margaret [11]3 years ago
4 0
<u>ANSWER:</u><u /> 4:15 hrs (255 minutes)<u>
EXPLANATION
</u>
<u />2315 (11:15pm) is 45 minutes away from midnight.
Midnight is then 3 and a half hours (210 minutes)<em> </em>from midnight.

Total of that is 255 minutes or 4:15 hrs
FrozenT [24]3 years ago
3 0
2315=11:15pm
0330=3am
12pm to 3pm is 3 hours
so just add 45 minutes
so the answer is 3 hours and 45 minutes
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Write each sum using summation notation.<br> 1+ 3 + 5 + 7 + ⋯ + 99
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Answer:

\Sigma(2n-1) \left \{ {{n=50} \atop {n=1}} \right. \hspace{5} n\in N

Step-by-step explanation:

First, we need to find the sequence associated to the summation. As you can see the sum only takes odd numbers into account. Hence the sequence it is defined by:

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n\in N

Now, we only need to find the limits of the summation:

Evaluating n=1

2(1)-1=2-1=1

Evaluating n=50

2(50)-1=100-1=99

Therefore the summation can be written as:

\Sigma(2n-1) \left \{ {{n=50} \atop {n=1}} \right.

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What is the answer to this problem- <br> (a-3b+5)-(-a+2b+3)
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<h3>What is the parabola?</h3>

It's the locus of a moving point that keeps the same distance between a stationary point and a specified line. The focus is a non-movable point, while the directrix is a non-movable line.

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