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3 years ago

15

Which of the following best describes the folding method used to form an angle bisector?

2 answers:

allsm [11]3 years ago

8 0

The correct answer would be choice A.

An angle bisector is an angle that is exactly in the middle of an angle. It is right in between the two rays of the angle. If you fold a paper having the rays touch, the fold will be right in the middle. That will be your angle bisector.

arsen [322]3 years ago

6 0

Answer: A.

Step-by-step explanation: apex

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Step-by-step explanation:

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2 years ago

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Simplify (6x^2 - 3 - 5x^3) - (4x^3 +2x^2 - 8)

yanalaym [24]

Answer:

-9x^3+4x^2+5

Step-by-step explanation:

(6x^2 - 3 - 5x^3) - (4x^3 +2x^2 - 8)

distribute the minus sign

(6x^2 - 3 - 5x^3) - 4x^3 -2x^2 + 8

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3 years ago

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romanna [79]

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3 years ago

What are the zeros of the quadratic function?<br> y = x^2 - 2x - 15

Pie

Answer:

$x=\frac{1+\sqrt{31}}{2},\:x=\frac{1-\sqrt{31}}{2}$

Step-by-step explanation:

$-> 0=2x^2-2x-15$

-zeros means the solution aka x intercept, meaning y=0

$x_{1,\:2}=\frac{-\left(-2\right)\pm \sqrt{\left(-2\right)^2-4\cdot \:2\left(-15\right)}}{2\cdot \:2}$

=> according to quadratic formula

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

where $ax^2+bx+c=0$

=> $x_{1,\:2}=\frac{-\left(-2\right)\pm \:2\sqrt{31}}{2\cdot \:2}$

simplify

$x_1=\frac{-\left(-2\right)+2\sqrt{31}}{2\cdot \:2},\:x_2=\frac{-\left(-2\right)-2\sqrt{31}}{2\cdot \:2}$

$x=\frac{1+\sqrt{31}}{2},\:x=\frac{1-\sqrt{31}}{2}$

Cannot simplify farther

3 0

2 years ago