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Fittoniya [83]
2 years ago
5

The perimeter of the square piece of gold is 12 milllimeter. how long is each side

Mathematics
1 answer:
Firdavs [7]2 years ago
4 0
48 mm long

Since a square has all equal sides, it will be 12mm for all sides

Perimeter = L (Length) + W (Width) + L + W
(In this case since it’s a 2D shape)

12 + 12 + 12 + 12 = 48

Hope this helped :)
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What is the slope of a line perpendicular to y = -7/4x?
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Help I dont know how to write the equation. I know its y=xb or y=x+b <br>​
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A plane flying horizontally at an altitude of 1 mi and a speed of 470 mi/h passes directly over a radar station. Find the rate a
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Answer:

407 mi/h

Step-by-step explanation:

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Speed of plane (s) = 470 mi/h

Height of plane above radar station (h) = 1 mi

Let the distance of plane from station be 'D' at any time 't' and let 'x' be the horizontal distance traveled in time 't' by the plane.

Consider a right angled triangle representing the above scenario.

We can see that, the height 'h' remains fixed as the plane is flying horizontally.

Speed of the plane is nothing but the rate of change of horizontal distance of plane. So, s=\frac{dx}{dt}=470\ mi/h

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2D\frac{dD}{dt}=0+2x\frac{dx}{dt}\\\\\frac{dD}{dt}=\frac{x}{D}(s)

Now, when the plane is 2 miles away from radar station, then D = 2 mi

Also, the horizontal distance traveled can be calculated using the value of 'D' in equation (1). This gives,

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Therefore, the distance from the plane to the station is increasing at a rate of 407 mi/h.

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