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The perimeter of a right triangle is 40 cm, and its hypotenuse measures 17cm. Find the length of each leg.Show the work that leads to your conclusion.

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2 Answers

3 votes

Answer:

8cm and 15cm

Explanation:

User Vijay Jagdale
by
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5 votes

Answer:

8 cm and 15 cm.

Explanation:

Let x and y represent length of each leg of right triangle.

We have been given that the perimeter of a right triangle is 40 cm, and its hypotenuse measures 17 cm.

We can represent this information in a system of equations as:


x+y+17=40...(1)


x^2+y^2=17^2...(2)

From equation (1), we will get:


x+y+17-17=40-17


x+y=23


x=23-y

Substitute this value in equation (2):


(23-y)^2+y^2=17^2


529-46y+2y^2=289


2y^2-46y+529=289


2y^2-46y+240=0


y^2-23y+120=0


y^2-15y-8y+120=0


y(y-15)-8(y-15)=0


(y-15)(y-8)=0


y=15\text{ (or) }y=8

Therefore, the length of the legs of the hypotenuse would be 8 cm and 15 feet.

User Nenadp
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