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abruzzese [7]
3 years ago
10

Can you help me please

Mathematics
1 answer:
leonid [27]3 years ago
8 0

Answer

3

Step-by-step explanation:

(4-1)^2+(8-8)^2=9

square root of 9 is 3

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Sheleah does 1500 J worth of work on a 250 N box. How far does she have to move the box?
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Answer: 6 m

Identify the given information.
w = 1500 J
f = 250 N

Choose which formula you should use. In this case, you are finding the distance.
d = w/f

Substitute and solve.
d = 1500 J/250 N
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Which of the following expressions does not equal: the sixth root of 81x^4y^8
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Two cars are driving towards an intersection from perpendicular directions. The first car's velocity is 101010 meters per second
guajiro [1.7K]

Answer:

D(L)/dt  = 407,6 m/s

Step-by-step explanation:

Let call A the intersection point.

As the cars are driving from perpendicular directions, they form with a coordinates x and y, a right  triangle, and distance between them is the hypotenuse (L), then

L² = x² + y²

Taking derivatives with respect to time we have:

2*L* D(L)/dt  =  2*x *D(x)/dt  + 2*y* D(y)/dt      (1)

In this equation we know: At a certain time

x  =  444 m       and  D(x)/dt  =  10 m/s

y  =  333 m       and  D(y)/dt  = 666 m/s

And   L = √(x)²  + (y)²    ⇒  L  = √ (444)² +( 333)² ⇒ L = √197136 + 110889

L = √308025

L = 555 m

Thn plugin these values in euatn (1) we get

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D(L)/dt  = ( 4440 + 221778)/555  (m/s)

D(L)/dt  = 407,6 m/s

6 0
4 years ago
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