(x + 40) (3x) What is value of x

Mathematics

1 answer:

EastWind [94]3 years ago

7 0

Answer:

Step-by-step explanation:

multiply both sides by 3x

3[x+40]x[x+40]

3x +120+x(square)+40x

43x+120+x(square)

quadractic equation

x(square)+43x+120

(x+40x+)(3x+120)

x(1+40)3(1+40)

x:3 or 40

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Answer:

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Step-by-step explanation:

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To get another vector orthogonal to the first two, you can just change the sign and use $-\mathbf v$ .