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4 years ago

How many degrees is the following polynomial? 3x^2+4x^7-9x^2−x^4+10

1 answer:

amm18124 years ago

6 0

3x^2+4x^7-9x^2-x^4+10=4x^7-x^4-6x^2+10

The degree is the maximun exponent of the variable x, in this case 7.

Answer: The polynomial is 7 degrees.

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3 years ago

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3 years ago

Look at the figure above. The surface area is _____ square cm.

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3 years ago

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3 years ago

Two lines, A and B, are represented by the equations given below!

lara [203]

Answer:

The solutions to the system of equations are:

$y=-8,\:x=-4$

Thus, option C is true because the point satisfies BOTH equations.

Step-by-step explanation:

Given the system of the equations

$\begin{bmatrix}y=x-4\\ y=3x+4\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}y-x=-4\\ y-3x=4\end{bmatrix}$

$y-3x=4$

$-$

$\underline{y-x=-4}$

$-2x=8$

$\begin{bmatrix}y-x=-4\\ -2x=8\end{bmatrix}$

solve for x

$-2x=8$

Divide both sides by -2

$\frac{-2x}{-2}=\frac{8}{-2}$

$x=-4$

$\mathrm{For\:}y-x=-4\mathrm{\:plug\:in\:}x=-4$

$y-\left(-4\right)=-4$

$y+4=-4$

$y=-8$

The solutions to the system of equations are:

$y=-8,\:x=-4$

Thus, option C is true because the point satisfies BOTH equations.

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3 years ago