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B. Rob would like to create a triangle that is
seven less than twice the perimeter of the
triangle below. Give an expression for the
perimeter of the new triangle in simplest form.

B Rob would like to create a triangle that is seven less than twice the perimeter of the triangle below Give an expression for the perimeter of the new triangl class=

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akposevictor

Answer:

[tex] 14y + 9 [/tex]

Step-by-step explanation:

Perimeter of the given triangular above = sum of all its sides.

[tex] = (y + 9) + 2y + (4y - 1) = y + 9 + 2y + 4y -1 [/tex]

Collect like terms

[tex] = y + 2y + 4y + 9 - 1 [/tex]

[tex] = 7y + 8 [/tex]

If Bob creates a new triangle that is 7 less than twice of the perimeter of the triangle above, the expression of the new triangle would be:

[tex] 2(7y + 8) - 7 [/tex]

Simplify

[tex] 2*7y + 2*8 - 7 [/tex]

[tex] 14y + 16 - 7 [/tex]

New perimeter = [tex] 14y + 9 [/tex]

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