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3 years ago

Which equation represents a direct linear variation?

Mathematics

1 answer:

ivolga24 [154]3 years ago

3 0

Y=1x because if you draw it on the line you’ll see the linear variation

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If 12 is equal to 6 plus X then what is X to the 2nd power.

leva [86]

Answer: 36

Step-by-step explanation:

Equation: 12=6+x; x^2

1. Solve for x. X=6

2. Find x^2 or 6^2= 36.

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3 years ago

The number of bikes sold each year, in thousands, in a city since 2004 is shown by the graph below, where x represents the numbe

fgiga [73]

Answer: Your answer will be A

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Step-by-step explanation:

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3 years ago

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

marishachu [46]

Answer:

Thus, the two root of the given quadratic equation $x^2-6=-x$ is 2 and -3 .

Step-by-step explanation:

Consider, the given Quadratic equation, $x^2-6=-x$

This can be written as , $x^2+x-6=0$

We have to solve using quadratic formula,

For a given quadratic equation $ax^2+bx+c=0$ we can find roots using,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ ...........(1)

Where, $\sqrt{b^2-4ac}$ is the discriminant.

Here, a = 1 , b = 1 , c = -6

Substitute in (1) , we get,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\Rightarrow x=\frac{-(1)\pm\sqrt{(1)^2-4\cdot 1 \cdot (-6)}}{2 \cdot 1}$

$\Rightarrow x=\frac{-1\pm\sqrt{25}}{2}$

$\Rightarrow x=\frac{-1\pm 5}{2}$

$\Rightarrow x_1=\frac{-1+5}{2}$ and $\Rightarrow x_2=\frac{-1-5}{2}$

$\Rightarrow x_1=\frac{4}{2}$ and $\Rightarrow x_2=\frac{-6}{2}$

$\Rightarrow x_1=2$ and $\Rightarrow x_2=-3$

Thus, the two root of the given quadratic equation $x^2-6=-x$ is 2 and -3 .

7 0

3 years ago

Read 2 more answers

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yawa3891 [41]

It would be $39.95 for the Fast movers (bc they have unlimited mileage) and $38.70 for Speedy movers (including the extra miles added after 75) Please let me know if this helped, thanks.

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3 years ago

Which expression is equivalent to the following?<br><br> 21x - 15

guajiro [1.7K]

Answer:

3(7x-5)

Step-by-step explanation:

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3 years ago