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ElenaW [278]
3 years ago
11

GEOMETRY The perimeter of a square is four times the length of one side. If the side length of a square is 1 centimeter, then th

e perimeter of the square is 4 centimeters. Write an equation in point-slope form to find the perimeter y of a square with side length x.
Mathematics
1 answer:
Irina18 [472]3 years ago
7 0

Answer:

y-4=4(x-1)

Step-by-step explanation:

The perimeter of a square is 4 times the length of one side, so we can write the equation like this.

y=4x

To find the equation in point-slope form, we know that when x=1, y=4. This gives us the point, (1,4). We also know that the slope of the equation is 4.

Plug the coordinate point into the point slope formula.

y-y1=m(x-x1)

y-4=4(x-1)

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Matt and Anna Killian are frequent fliers on​ Fast-n-Go Airlines. They often fly between two cities that are a distance of 1980
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Answer:

y (plane speed) 400 miles/hr

x (wind speed)  40 miles/hr

Step-by-step explanation:

going into the wind make the plane flew 5,5 hours to get 1980 miles, implies the real travel speed was

1980 / 5,5 = 360 miles/hours, and at the same time is the result of:  

speed plane (y)  in direction A to B  plus wind speed (x) in direction B to A. Notice opposites direction speed, so we have:

y + (-x) = 360          (1)

The return fly  took 4,5 hours so 1980/4,5 = 440 miles/ hours as the result

Y + x = 440             (2)

We have a two equation with two variables system, It could be solved for any of the procedures. We will use the substitution method.

From equation      (1)        y + (-x) = 360         y  - x = 360      y = 360 + x    (1)

In the second equation    

y + x = 440         then we replace y for its value as function of x

(360 + x ) + x = 440

Solving for x        360 + 2x = 440      or    2x = 440 – 360        

 x   (440 - 360)/2

 x = 40 miles/hr

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And replacing the value of x in eq. (1)        y = 360 + 40 = 400

Y (plane speed) = 400 miles /hr

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How do you write 17.009 in word form
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17.009 in word form is
seventeen and nine thousandths.

Hope this helped! :))
8 0
3 years ago
Read 2 more answers
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