2x+5y=21, x+y=3
y=3-x
2x+5y=21
2x+5(3-x) =21
2x+15-5x=21
2x-5x+15=21
-3x+15=21
-3x=21-15
-x=6/3
-x=2
x=-2
You can calculate the distance between two point using this fomula:
√(x_2-x_1)^2+(y_2-y_1)^2
If you insert you values you get:
√(4-5)^2+(-7-2)^2 = 9.06 = 9.1
The length of the sides are 2.24, 4.24 and 4.12 units while the slope are 0.5, -1 and -4.
<h3>Linear equation</h3>
A linear equation is in the form:
y = mx + b
where y, x are variables, m is the rate of change and b is the initial value of y.
For RS:
For RT:
For ST:
The length of the sides are 2.24, 4.24 and 4.12 units while the slope are 0.5, -1 and -4.
Find out more on linear equation at: brainly.com/question/14323743
A dinosaur bc dinosaurs have lots of kegs