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3 years ago

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The equation x + 3y=9 and the equation 2x+6y=18 are plotted on the same graph chart. All of the following points will lie on bot

h graphs EXCEPT
A. (9,0)
B. (0,3)
C. (6,1)
D. (12, -1)
E. (3,4)

1 answer:

PolarNik [594]3 years ago

5 0

Im sorry all i know is that the lines are parallel and A and B are definitely on the line, i believe the answer is D

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In the circle, CP=x and PD=y. If xy=28 and AP=2, then what is PB?

mario62 [17]

We know that
<span>When two chords intersect each other inside a circle, the products of their segments are equal
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so
CP*PD=AP*PB
x*y=2*PB-----------> 28=2*PB----------> PB=14

the answer is
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Determine between which consecutive integers the real zeros of y(x) = x2 - 4x – 2 are located.

Sholpan [36]

Answer:

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

Step-by-step explanation:

We have the function:

$y(x) = x2 - 4x-2$

As this is a quadratic function, we can calculate the zeros of the function with the quadratic equation:

$x_{1,2}=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\\\x=\dfrac{-(-4)\pm\sqrt{(-4)^2-4\cdot 1\cdot(-2)}}{2\cdot 1}\\\\\\x=\dfrac{4\pm\sqrt{16+8}}{2}\\\\\\x=\dfrac{4\pm\sqrt{24}}{2}\\\\\\x=\dfrac{4\pm4.9}{2}=2\pm2.45\\\\\\x_1=2+2.45=4.45\\\\x_2=2-2.45=-0.45$

The zeros are x1=4.45 and x2=-0.45.

x1 is between 4 and 5.

x2 is between -1 and 0.

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Answer:

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Step-by-step explanation:

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