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A triangle has sides of length 10, 8, and y inches. Which is an expression for the perimeter of the triangle and what is the perimeter when y=7? A) 8(10+y) The perimeter is 136 inches when y=7. B) 10(y+8) The perimeter is 150 inches when y=7. C) y(10+8) The perimeter is 126 inches when y=7. (or) D) y+10+8 The perimeter is 25 inches when y=7.

Respuesta :

the perimeter is the sum of them all so the answer is d) 7 + 10 + 8 = 25
aachen

Answer:

Option (D) is correct.

Step-by-step explanation:

Given: A triangle has sides of length 10, 8, and y inches.

To find: i) Expression for the perimeter

           ii) The perimeter when [tex]y=7[/tex]

Solution: We know that the triangle has three sides, and the perimeter of a triangle is calculated by adding all the three sides.

Here, the three sides are 10, 8, and y inches.

Now, to find the expression for finding the perimeter we need to add the three sides.

So, the expression for perimeter is [tex]y+10+8[/tex]

Now, if [tex]y=7[/tex] , the perimeter is [tex]7+10+8=25[/tex] inches.

Hence, we get the expression for perimeter as [tex]y+10+8[/tex] and the perimeter when [tex]y=7[/tex] is 25 inches.

So, option (D) is correct.

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