janiyahmcgolley
04.02.2021 •
Mathematics
The sides of a triangle measure 2x + 5, X – 4, and 3(2x + 1). What is the perimeter of the triangle?
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Ответ:
9x+4
Step-by-step explanation:
perimeter= sum of all sides
perimeter= (2x+5)+ (x-4)+ 3(2x+1)
= 2x+5+x-4+ 6x+3
= 2x+x+6x+5+3-4
= 9x+8-4
=9x+4
Ответ:
7 + 21
Step-by-step explanation:
7(1 + 3) = (7 x 1) + (7 x 3) = 7 + 21
owo?