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4 years ago

What is the kinetic Energy of a camion of 5,000 kg and turn at 100km/h ?

Mathematics

1 answer:

Alex787 [66]4 years ago

6 0

Step-by-step explanation:

Given

mass (m) = 5000 kg

velocity (v) = 100 km/h = 100* 1000/ 3600 = 27.78m/s

Now

Kinetic energy

= 1/2 mv²

= 1/2 * 5000 * 27.78²

= 1929321 joule

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Find 2 numbers thats sum to 21 and the sum of squares is 261

statuscvo [17]

15 and 6.

15+ 6 = 21

15^2 + 6^2 = 261

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3 years ago

(4 + 6)/(5) = ? Easy answer.

coldgirl [10]

Answer:

Step-by-step explanation:

(4+6)/(5)

10/5

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3 years ago

a rectangle is 4 centimeters longer than it is wide. the area is 117 square centimeters. find the dimensions of the rectangle

vekshin1

Answer:

width: 9 cm
length: 13 cm

Step-by-step explanation:

Integer factors of 117 include ...

... 117 = 1×117 = 3×39 ≈ 9×13

The last factor pair is two factors that differ by 4. We can take these to be the dimensions of the rectangle.

_____

If you want to write an equation for width (w), it might be ...

... w(w+4) = 117

... w² +4w -117 = 0

The factorization problem for this quadratic is the problem of finding two factors of 117 that differ by 4. That is what we have done, above.

If you want to solve this by completing the square, you can to this:

... w² +4w = 117

... w² +4w +4 = 121 . . . . . add 4 = (4/2)² to complete the square

... (w+2)² = 121

... w + 2 = ±√121 = ±11 . . . . take the square root

... w = -2 ± 11 . . . . . we're only interested in the positive solution

... w = 9, then w+4 = 13 and the dimensions are 9 cm by 13 cm.

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3 years ago

Pls help 9th grade math

loris [4]

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3 years ago

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Bogdan [553]

Step-by-step explanation:

AB+BC+CA = AC +CY+YA

ca ko comman liya jo ki uska squire me liya

then 

ab+bc+(ca ko squrare main liya) 

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3 years ago