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pantera1 [17]
3 years ago
5

The perimeter of a park is 300 feet the length of the park is 50 feet longer than the width. Find the length

Mathematics
1 answer:
arlik [135]3 years ago
8 0

Answer:

55.41 feet

Step-by-step explanation:

Let the width be x.

ATQ, (x+50)*x=300, x=5*srt(37)-25=5.41. Length is 55.41 feet

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A square has an area of 561.69m2. Work out the perimeter of the square.
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The answer is 94.8 m

Step-by-step explanation:

Area of a square is a²

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Natasha2012 [34]

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<u>Option C</u> will be your answer

Step-by-step explanation:

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2 years ago
HELP PLEASE ANYONE STEP BY STEP TIMED
UNO [17]

Answer:

\huge\boxed{\text{B) 4}}

Step-by-step explanation:

We can use the properties of some of these circles to solve and find the value of x.

FIrst off - we know that to find the side of a right triangle we can use the Pythagorean Theorem, which states that a^2 + b^2 = c^2 (a and b being legs, c being the hypotenuse.)

<h2><u>Finding the hypotenuse</u></h2>

We also know that this triangle is in a circle. Part of the hypotenuse and the altitude of the triangle are in the circle.

Point W is the center of the circle. Therefore, any points stretching to the edge from it will be equal (since this is a circle).

With this knowledge - UW and WZ are equal.

Therefore, since UW is x-1, WZ will be too.

We also know the length of VZ. We can add this to WZ to find the length of the whole hypotenuse.

\displaystyle x-1+2 \\ x+1

So the length of the hypotenuse, WV, is x+1.

<h2><u>Finding the value of x</u></h2>

Now that we know the length of the hypotenuse, we can use the Pythagorean Theorem like we stated before to find the value of x.

We know the two legs are x-1 and 2x-4, while the hypotenuse is

  • \displaystyle (x-1)^2 + (2x-4)^2 = (x+1)^2
  • (x^2 - 2x + 1) + (4x^2-16x+16) = (x^2 + 2x + 1) (use FOIL to find the value of each expression squared)
  • 5x^2 - 18x + 17 = x^2 + 2x + 1 (simplify the left side)
  • 4x^2 -20x + 16 = 0 (subtract both sides by x^2 +2x + 1)
  • x = \frac{{ -b \pm \sqrt {b^2 - 4ac} }}{{2a}} (Quadratic formula)
  • \frac{{ -(-20) \pm \sqrt {(-20)^2 - 4 \cdot 4 \cdot 16} }}{{2 \cdot 4}} (plug in values from equation)
  • \frac{{ 20 \pm \sqrt {400 - 256} }}{8}} (simplify)
  • \frac{{ 20 \pm \sqrt {144} }}{8}} (simplify)
  • \frac{{ 20 \pm 12 }}{8}} (simplify)
  • \displaystyle x = \frac{20+12}{8} \ \text{and} \ \frac{20-12}{8} (use plus/minus to find two roots)
  • \displaystyle x = \frac{32}{8} \ \text{and} \ \frac{8}{8} (simplify)
  • \displaystyle x = 4 \ \text{and} \ 1

1 can not be a possible answer because UW would end up being (1-1) = 0 units long! This isn't possible!

Therefore, the correct answer would be B) 4.

Hope this helped!

6 0
2 years ago
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