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4 years ago

i don’t know how to find the slope of this like i know the answer i just don’t know how to figure it out

Mathematics

1 answer:

slava [35]4 years ago

3 0

Answer:

$-\frac{4}{3}$

Step-by-step explanation:

To find the slope of a straight line only two known points on the straight line are sufficient.

If we take the first two points i.e. (-1,3) and (2,-1), then slope of the straight line will be $\frac{3-(-1)}{-1-2} = -\frac{4}{3}$ (Answer)

Note: Since we know that if a straight line passes through two points (x1,y1) and (x2,y2), then the slope of the straight line is given by $m = \frac{y1-y2}{x1-x2}$

Similar question :

↣ brainly.com/question/20922457

8 0

2 years ago

Read 2 more answers

Foci of ellipse of 3x2 + y2 =9

Oksi-84 [34.3K]

Answer:

x=√-1/3 y^2 +3 or x=-√-1/3 y^2 +3

Step-by-step explanation:

Let's solve for x.

3x2+y2=9

Step 1: Add -y^2 to both sides.

3x2+y2+−y2=9+−y2

3x2=−y2+9

Step 2: Divide both sides by 3.

3x^2/3= -y^2+9/3

x^2=-1/3 y^2 +3

x=√-1/3 y^2 +3 or x=-√-1/3 y^2 +3

Hope it helped!

8 0

3 years ago

Please help ASAP!

Kruka [31]

First, recall that

$\sin(-\theta)=-\sin\theta$

So if $\sin(-\theta)=\dfrac15$ , then $\sin\theta=-\dfrac15$ .

Second,

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}$

We know that $\tan\theta>0$ and $\sin\theta$ , which means we should also have $\cos\theta$ .

Third,

$\sin^2\theta+\cos^2\theta=1\implies\cos\theta=\pm\sqrt{1-\sin^2\theta}$

but as we've already shown, we need to have $\cos\theta$ , so we pick the negative root.

Finally,

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}\iff\dfrac6{\sqrt{12}}=\dfrac{-\frac15}{\cos\theta}\implies\cos\theta=-\dfrac1{5\sqrt3}$

Unfortunately, none of the given answers match, so perhaps I've misunderstood one of the given conditions... In any case, this answer should tell you everything you need to know to find the right solution from the given options.

6 0

3 years ago

The diagram shows a part of a regular 10 sided polygon<br> work out the size of the angle marked x

OverLord2011 [107]

Answer:

Step-by-step explanation:

7 0

3 years ago

What is 11 rounded off to the nearest hundred

fenix001 [56]

The answer is 0 because it isn't above 49 and therefore can't be rounded to 100.

Hope this helps :)

3 0

3 years ago