2 years ago

Light A flashes every 8 seconds.

Mathematics

1 answer:

Nat2105 [25]2 years ago

3 0

Answer:

40 seconds

Step-by-step explanation:

8 20

16 40

40 seconds

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Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

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Answer:

x=9,-1 and $x^2+(-8)x=9$

Explanation:

we have been given with the quadratic equation $x^2-8x-9$

we compare the given quadratic equation with general quadratic equation

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from given quadratic equation a=1,b= -8,c= -9

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Now, substituting the values we will get

$x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1$

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Pine Bluff Middle School is having its annual Spring Fling dance, which will cost $400. The student treasurer reported that the

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Graph the system of equations.

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You can soustracte the first or the second one

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