3 years ago

Are the graphs of the lines in the pair parallel? Y=6x + 9 27x - 3y= -81

1 answer:

7 0

No, the graphs of the lines are not parallel because if you simplify 27x-3y=-81, you get y=9x+27, and in order to have the lines parallel, both equations must have the same "m" in y=mx+b. 6 and 9 do not equal, so no they are not parallel.

You might be interested in

Which values for n will make this expression true?

zavuch27 [327]

A because it rounds up

3 0

3 years ago

Read 2 more answers

Anybody know how to do this

ICE Princess25 [194]

Answer:

$y = 2$

$y = 4$

$y = 8$

$y = 2$

$y = 3$

$y = 6$

3 0

3 years ago

Read 2 more answers

Please help now i need it quick

liubo4ka [24]

1. Out of a study of 64 dentists, 56 recommended.
2. 3 is the answer. Hope you do well on your test :)))

8 0

3 years ago

Read 2 more answers

Sin^2(x/2)=sin^2x <br> Find the value of x

Veronika [31]

$\sin^2\dfrac x2=\sin^2x$
$\dfrac{1-\cos x}2=1-\cos^2x$
$1-\cos x=2-2\cos^2x$
$2\cos^2x-\cos x-1=0$
$(2\cos x+1)(\cos x-1)=0$
$\implies\begin{cases}2\cos x+1=0\\\cos x-1=0\end{cases}$ $\implies\begin{cases}\cos x=-\frac12\\\cos x=1\end{cases}$

The first case occurs in $0\le x$ for $x=\dfrac{2\pi}3$ and $x=\dfrac{4\pi}3$ . Extending the domain to account for all real $x$ , we have this happening for $x=\dfrac{2\pi}3+2n\pi$ and $\dfrac{4\pi}3+2n\pi$ , where $n\in\mathbb Z$ .

The second case occurs in $0\le x$ when $x=0$ , and extending to all reals we have $x=2n\pi$ for $n\in\mathbb Z$ , i.e. any even multiple of $\pi$ .

6 0

3 years ago

Do you guys know this?

tiny-mole [99]

Answer: b and d im sure

Step-by-step explanation:

7 0

3 years ago