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kobusy [5.1K]
3 years ago
10

How many miles is the perimeter of her walk?

Mathematics
1 answer:
Oxana [17]3 years ago
3 0

Answer:

Perimeter = 6 mi

Step-by-step explanation:

P= 2.4 mi + 2.1 mi + 1.5 mi

P= 6 mi

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Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed b
guajiro [1.7K]
With that information you can determine how far the park is from the football field.

Call h the height of the triangle, x the distance from the park to the football field and y the distance from the park to the home of Kristen.

Using Pithagora's theorem, ou can state this system of equations:

1) From the complet triangle: x^2 + y^2 = (8 + 2)^2 = 10^2 = 100

2) From the triangle whose hypotenuse is the distance from the park to the football field:

x^2 = 8^2 + h^2

3) From the triangle whose hypotenuse is the distance from the park to the home of Kristen:

y^2 = 2^2 + h^2

To solve the system start by subtracting equation 3) from equation 1) =>

x^2 + y^2 = 100
y^2 = 4 + h^2
---------------------
x^2 = 100 - 4 - h^2

x^2 = 96 - h^2

Now sum this result to equation 2

x^2 = 96 - h^2
x^2 = 64 + h^2
---------------------
2x^2 = 96 + 64

2x^2 = 160

=> x^2 = 80

=> x = 8.94

Answer: 8.94 miles
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4 years ago
Kayden wants to ride his bicycle 29.5 miles this week. He has
geniusboy [140]

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Step-by-step explanation:

Since B is the midpoint,  AB and BC must be congruent (since theyre both half of the segment). The equation is:

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Given that the area of this square is 361 ft^2, the side length is √(361 ft^2), or 19 ft.

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