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3 years ago

car moves with speed of 80m/s to go from city A to city B for 12 hours. How long will it take to move car with speed of 60 m/s?

Mathematics

1 answer:

ipn [44]3 years ago

3 0

Answer:

16 hours

Step-by-step explanation:

velocity = distance / time => distance = velocity * time;

distance = 80 m/s * 12 hours

newVelocity = 60 m/s;

newVelocity = distance / newTime => newTime = distance / newVelocity = 80 m/s * 12 hours / (60 m/s) = (8/6) * 12 hours = 16 hours

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2 years ago

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3 years ago

What is the area of this triangle ?

oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

We will use formula:

$Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}$

We need to find the lengths of side DE, EF and FD

Length of side DE = a = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

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Length of side EF = b = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

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so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

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So, area of triangle is 9.88 units^2

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3 years ago

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sineoko [7]

Answer:

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Step-by-step explanation:

You can put Kiara's scale into a ratio or fraction to help visualize it better: 13/6. Now, let's put what we do know for the other ratio into a fraction. we know that the pool is 26 centimeters wide, and since the 26 matches with the 13, that goes in the numerater. since we don't know the denominator, we can just put 26/x (you can use whatever letter you like but I'll use x here)

So in order to get 13/6 to 26/x, we need to find how to figure out what we are doing to the original fraction. Since 13 x 2= 26, it looks like we are multiplying the ratios by 2. Now that we know that, we can multiply the denominator (6) by 2 to equal 12, our answer.

Hope this helps :)

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

car moves with speed of 80m/s to go from city A to city B for 12 hours. How long will it take to move car with speed of 60 m/s?​

car moves with speed of 80m/s to go from city A to city B for 12 hours. How long will it take to move car with speed of 60 m/s?