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Oksanka [162]
3 years ago
7

Zara travelled in a train moving at an average speed of 120km/h and covered a distance of 40km towards East. i. Calculate the ti

me taken by the train to cover this distance
Mathematics
1 answer:
Andru [333]3 years ago
6 0

Answer:

20 minutes

Step-by-step explanation:

Distance= 40 km

Speed= 120 km/h

Time= distance/speed= 40/120= 1/3 hour= 20 min

or it could be =0.33 hrs

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Order the subjects from least to greatest art for 25th English 13% math 0.28 other 7% science 21 over 100 social studies 0.15
Airida [17]

Answer:

Other, English, Social Studies, Art, Science, Math

Step-by-step explanation:

Let's start by tking each subject and putting them in decimal form, so that way we have an accurate way to see which is truly greater.

Art is 4/25, so to get the denominator up to 100 (the number it needs to be at to convert to decimal form). You have to times 25 by 4, and also 4 by 4. You get 16/100, which is .16 in decimal form.

English is 13%, or 13/100. Just convert it to decimal and you get .13

Math is already at .28

Other is at 7%, or 07/100. In decimal form, .07

Science is 21/100, and in decimal form, .21

Social studies is in decimal form at .15

You now have the numbers .16, .13, .28, .07, .21, and .15

Just put these in order and you get:

.07, .13, .15, .16, .21, .28

Other, English, Social Studies, Art, Science, Math

4 0
3 years ago
The value of a book is $150 and decreases at a rate of 4% per year. Find the value of the book after 12 years
nevsk [136]
If it decreases at 4% every year, then its value becomes:

100% - 4% = 96% = 96/100 = 0.96

At the end of the 1 year its value becomes:  150*(0.96)

At the end of the 2 years its value becomes:  150*(0.96)*(0.96) = 150*(0.96)²

At the end of the 3 years its value becomes:  150*(0.96)*(0.96)*(0.96) = 150(0.96)³

So similarly at the end of 12 years, its value becomes 150*(0.96)¹²

=50*(0.96)¹²    simplify with calculator.

<span>≈ 91.91

Value at the end of 12 years becomes ≈ $</span><span>91.91

I hope this helps.
</span>
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3 years ago
Which equation below and value for x fits this model?
Alexus [3.1K]

Answer: I wanna say it's B

Step-by-step explanation: but I'm not completely sure.

5 0
3 years ago
How to solve the equation.. 1/4x=7
Sedaia [141]

Answer:

b

Step-by-step explanation:

b

6 0
3 years ago
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Which set of numbers could be the side lengths of a right triangle?
Oliga [24]
A 3,4,6 Oh my God its so very hard
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3 years ago
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