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3 years ago

Please help!!! i will mark brainliest and i need a little bit of explanation!!

Mathematics

1 answer:

Mazyrski [523]3 years ago

8 0

Answer:

Step-by-step explanation:

it is e because 2 hours is speed is 40 4 hours speed is i0

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Point A is located in which quadrant?<br><br><br><br><br><br> IV<br> III<br> I<br> II

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Quadrant II

Step-by-step explanation:

This is because the top right is I, the top left

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Step-by-step explanation:

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3 years ago

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When deriving the quadratic formula by completing the square, what expression can be added to both sides of the equation to crea

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Answer:

According to steps 2 and 4. The second-order polynomial must be added by $-c$ and $b^{2}$ to create a perfect square trinomial.

Step-by-step explanation:

Let consider a second-order polynomial of the form $a\cdot x^{2} + b\cdot x + c = 0$ , $\forall \,x \in\mathbb{R}$ . The procedure is presented below:

1) $a\cdot x^{2} + b\cdot x + c = 0$ (Given)

2) $a\cdot x^{2} + b \cdot x = -c$ (Compatibility with addition/Existence of additive inverse/Modulative property)

3) $4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x = -4\cdot a \cdot c$ (Compatibility with multiplication)

4) $4\cdot a^{2}\cdot x^{2} + 4\cdot a \cdot b \cdot x + b^{2} = b^{2}-4\cdot a \cdot c$ (Compatibility with addition/Existence of additive inverse/Modulative property)

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3 years ago

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Explanation:

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