Choose the equations that are not linear equations. -x - y = 2, x^2 + y = 4, x÷2 - y^3 = 1, x = 5

Step-by-step explanation:

x^2 + y = 4, is not linear because the independent variable, x, is squared.

x÷2 - y^3 = 1 is not linear because the third power of y makes this a cubic.

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

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step-by-step explanatio89