<em>Answer:</em>
<em>x = 1</em>
<em>Step-by-step explanation:</em>
<em>(4 + 9 + 3 + 2 + x + 5)/6 = 4</em>
<em>(4 + 9 + 3 + 2 + x + 5) = 6×4</em>
<em>(4 + 9 + 3 + 2 + x + 5) = 24</em>
<em>x = 24 - (4 + 9 + 3 + 2 + 5)</em>
<em>x = 24 - 23</em>
<em>x = 1</em>
To get the type of triangle mentioned we need to find the value of x first.
Sum of angles in a triangle add up to 180°, thus
2x+(3x-15)+(7x+15)=180
2x+3x-15+7x+15=180
12x=180
x=15°
thus the respective sizes will be:
2x=30°
3x-15=30°
7x+15=120°
Since the triangle has two congruent angles we conclude that the triangle is called Isosceles triangle
The answer is y=(1/2)x -5
You are given the slope and a core donate pair so you plug them in to the equation. 2=x. -4=y. And (1/2)= m
Then work out like a one step equation