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3 years ago

Which table represents y as a function of x

Mathematics

1 answer:

melisa1 [442]3 years ago

5 0

The answer Is G. So go with G

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The rectangle below has an area of x^2 - 9 square meters and a width of x - 3 meters.

Rama09 [41]

Answer:

x+3

Step-by-step explanation:

Area of a rectangle is $L\cdot W$ .

We know the width, W, is $x-3$ and we know the area is $x^2-9$ .

Inputting this in our formula above we get:

$x^2-9=L(x-3)$

L is a an expression such that when you multiply it to $(x-3)$ gives you $(x^2-9)$ .

$x^2-9$ is a difference of squares and can be factored using:

$a^2-b^2=(a-b)(a+b)$ .

$x^2-9=(x-3)(x+3)$ .

So L=x-3 and W=x+3.

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3 years ago

PLEASE HELP ASAP A popular video game claims that the average time needed to reach level 10 Paladin is 3 hours with a standard d

sukhopar [10]

I'm guessing 1%

0.4X2.5=1

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3 years ago

A ball is thrown from an initial height of 3 meters with an initial upward velocity of 30 m/s. The ball's height h (in meters) a

yanalaym [24]

$h=3+30t-5t^2\implies 13=3+30t-5t^2\implies 0=-10+30t-5t^2 \\\\\\ 5t^2-30t+10=0\implies 5(t^2-6t+2)=0\implies t^2-6t+2=0$

now, it doesn't give us nice looking integers, so let's plug that into the quadratic formula.

$~~~~~~~~~~~~\textit{quadratic formula} \\\\ \stackrel{\stackrel{a}{\downarrow }}{1}t^2\stackrel{\stackrel{b}{\downarrow }}{-6}t\stackrel{\stackrel{c}{\downarrow }}{+2}=0 ~\hspace{10em} t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a} \\\\\\ t= \cfrac{ - (-6) \pm \sqrt { (-6)^2 -4(1)(2)}}{2(1)}\implies t=\cfrac{6\pm\sqrt{36-8}}{2}$

$t=\cfrac{6\pm\sqrt{28}}{2}\implies t=\cfrac{6\pm\sqrt{2^2\cdot 7}}{2}\implies t=\cfrac{6\pm 2\sqrt{7}}{2}\implies t=\cfrac{2(3\pm 1\sqrt{7})}{2} \\\\\\ t=3\pm \sqrt{7}\implies t= \begin{cases} 3+\sqrt{7}\\ 3-\sqrt{7} \end{cases}\implies t\approx \begin{cases} 5.65\\ 0.35 \end{cases}$

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3 years ago

What is the angle pair relationship between angles 6 and 8?

djverab [1.8K]

Those are vertical angles

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4 years ago

Derive the equation of the parabola with a focus at (–5, 5) and a directrix of y = -1.

Elza [17]

( x + 5 )^2 = - ( y - 5 )

6 0

4 years ago

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