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liubo4ka [24]
3 years ago
9

A train leaves at 14.54 and arrives at its destination at 15.47. If the train travelled 66 km, what was it's average speed in km

/h? Give your answer rounded to 1 dp. step by step explanation
Mathematics
1 answer:
JulijaS [17]3 years ago
3 0

Answer: average speed of the train = 4,483.0 km/h

Step-by-step explanation:

Speed = Distance / Time

Distance = 66 km

Time = 15.47  cancelling 15, we have 60 sec added to 47 sec

         <u> - 14.54</u>

=         14.   107    60 + 47

         <u> - 14.  54</u>

<u>                     53secs</u>

53secs to hours becomes =

60 secs = 1 min

60 min= i hour

therefore 53seconds =53/3600=0.0147222hours

Speed= 66/ 0.0147222= 4,483.025

Rounding to 1 dp becomes= 4,483.0 km/h

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Hope this helps :)
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2 years ago
A tow truck company in Houston charges a $40 service call fee and an additional fee of $15 per mile that the vehicle is towed. W
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Answer:

<h2>c=15m+40</h2>

Step-by-step explanation:

Step one:

given data

charged = $40 call fee

additional charges= $15 per mile

let the number of miles be m

and let the total charges be c

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3 years ago
If 15 pen cost $3.90, which equation would help determine the cost of 6 pens?
madreJ [45]

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Step-by-step explanation:

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line w passes through point (-6,-7) and has a slope 1/2. what is the equation for the line in point-slope form?
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Answer:

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Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

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Here m = \frac{1}{2} and (a, b ) = (- 6, - 7 ) , then

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2 years ago
Read 2 more answers
Which equation in point-slope form contains the point (4, –1) and has slope 3?
Andrew [12]

Answer:

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Step-by-step explanation:

Hi there!

We are given a slope of 3 and a point (4,-1).

We need to find the equation of the line in point-slope form

Point-slope form is given as y-y1=m(x-x1), where m is the slope, and (x1,y1) is a point

We have all of the needed information to substitute into the formula

First, let's label the values of everything to avoid any confusion

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now substitute into the formula *remember, the formula has SUBTRACTION, and we have a NEGATIVE number, so we'll end up subtracting a negative*

y--1=3(x-4)

simplify

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That's it!

Hope this helps :)

4 0
3 years ago
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