3 years ago

I need help brosssssssssss

Mathematics

1 answer:

gavmur [86]3 years ago

5 0

Answer
B. Is the answer.

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Answer:

-2

Step-by-step explanation:

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10 / (-5) = -2

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Step-by-step explidkanation:

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"Time headway" in traffic flow is the elapsed time between the time that one car finishes passing a fixed point and the instant

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Answer:

Detailed explanation of the answer is given in the attached files. Please have a look.

Step-by-step explanation:

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3 years ago

Any one know how to find the roots of an equation?

soldier1979 [14.2K]

So what you do is
make into ax^2+bx+c=0 form

add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

ax^2+bx+c=0
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b=-2
c=9/2
subsitute
x= $\frac{-(-2)+/- \sqrt{(-2)^{2}-4(1)(9/2)} }{2(1)}$
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x= $\frac{2+/- \sqrt{-14} }{2}$
x= $1+/- \frac{\sqrt{-14} }{2}$
x= $1+/- \frac{\sqrt{14} \sqrt{-1}}{2}$
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