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3 years ago

Given the quadratic equation 8-6x=-2x^2 complete the following:

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

8 0

Answer:

a. $2x^2-6x+8$

b. a=2, b=-6, and c=8

Step-by-step explanation:

The standard form of a quadratic is $ax^2+bx+c$ written in descending order and can be found by using inverse operations to rearrange terms.

$8-6x=-2x^2\\\\8-6x+2x^2=-2x^2+2x^2\\\\2x^2-6x+8=0$

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4 years ago

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3 years ago

What is the greatest whole number that satisfies the inequality 3x -1 < 8 ?

murzikaleks [220]

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Step-by-step explanation:

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3 years ago

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kicyunya [14]

Answer:

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4 0

3 years ago

Find the exact value by using a half-angle identity. tan seven pi divided by eight

murzikaleks [220]

9514 1404 393

Answer:

1 -√2

Step-by-step explanation:

$\tan(x/2)=\dfrac{1-\cos(x)}{\sin(x)}\\\\\tan\left(\dfrac{1}{2}\cdot\dfrac{7\pi}{4}\right)=\dfrac{1-\cos\dfrac{7\pi}{4}}{\sin\dfrac{7\pi}{4}}=\dfrac{1-\dfrac{1}{\sqrt{2}}}{-\dfrac{1}{\sqrt{2}}}=\boxed{1-\sqrt{2}}$

tan(7π/8) = 1 -√2

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3 years ago