ricardotavarez6

01.12.2020 • 

History

Which statement best describes air quality in Houston since 1999? Air pollution has been steadily increasing in Houston since 1999. Air pollution has been steadily decreasing in Houston since 1999. Air pollution has varied depending on climate conditions since 1999. Air pollution has steadily decreased since 1999, before suddenly increasing.

Ответ:

cici86

17.04.2023

History

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5 x - 1 + 13 - x = 24
4 x + 12 = 24
4 x = 24 - 12
4 x = 12
x = 3
The perimeter of WXYZ: 2 ( XY + YZ ) = 2 ( 5 x - 1 ) = 2 ( 5 · 3 - 1 ) = 
2 ( 15 - 1 ) = 2 · 14 =  28 

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