contestada

a triangle has side lengths of (2.4k-7.4) centimeters, (6.3k-2.2) centimeters and (6.8m+2.4) centimeters. which expression represents the perimeter, in centimeters, of the triangle?
a. 9.2m-0.9k
b.-9.6+9.2m+8.7k
c. 6.8m-7.2+8.7k
d. -5k+4.1+9.2m

Respuesta :

sarshaly

c. 6.8m-7.2+8.7k

[tex](2.4k-7.4)+(6.3k-2.2)+(6.8m+2.4)[/tex] combine like terms

[tex]2.4k+6.3k+6.8m-7.4-2.2+2.4\\9.7k+6.8m-9.6+2.4\\9.7k+6.8m-7.2[/tex]

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