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NARA [144]
3 years ago
5

How to find area of a triangle with given coordinates

Mathematics
1 answer:
umka2103 [35]3 years ago
4 0
What is that i can't see it
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1. what’s the distance between (-8, -6) and (4, 10)?
charle [14.2K]

Use the formula of a distance between two points:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

(-8,\ -6),\ (4,\ 10)\\\\d=\sqrt{(4-(-8))^2+(10-(-6))^2}=\sqrt{12^2+16^2}\\\\=\sqrt{144+256}=\sqrt{400}=\boxed{20}\\\\(5,\ 14),\ (-3,\ -9)\\\\d=\sqrt{(-3-5)^2+(-9-14)^2}=\sqrt{(-8)^2+(-23)^2}\\\\=\sqrt{64+529}=\boxed{\sqrt{593}\approx24.35}

7 0
3 years ago
Graph 3x + 4y = -10
cricket20 [7]
First, isolate y on one side to find some information about the graph. 

3x+4y=-10 
4y=-10-3x
y=(-10-3x)/4 

Now find out the x and y intercepts of this equation;

(0)=(-10-3x)/4 
4x0=-10-3x 
0=-10-3x 
3x=-10 
x=-10/3 or -3.3333 (x-intercept) 

y=(-10-3(0))/4
4y=-10 
y=-10/4 or -5/2 = -2.5 (y-intercept) 

Plot these points onto your graph and connect the lines. 

I have attached a graph below, I'm sorry I couldn't do it on paper. 

Hope I helped :) 

8 0
3 years ago
|x +2], if x&gt;-1<br> Plz help
Fantom [35]

Answer:

Step-by-step explanation:

greater than 1   ,  is your teacher just giving you brain teaser questions?  these seem like they are .. "out in the weeds"  type of questions,  not really useful math   :/  

3 0
3 years ago
What is the correct equation for the line graphed below?
dusya [7]
The First one

y = x + 1
4 0
3 years ago
Please help me on this
IrinaK [193]
Babushka babushka babushka
5 0
2 years ago
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