Answer: x= 3
Step-by-step explanation:
2x + 5 = 11
2x = 6
x = 3
The equation of the line is (slope-intercept) y=

x+(-7) or (standard form)

x+y=-7
Answer:
The perimeter of the triangle is 
Step-by-step explanation:
Let

we know that
The perimeter of triangle is equal to

the formula to calculate the distance between two points is equal to
step 1
Find the distance AB

substitute in the formula
step 2
Find the distance BC

substitute in the formula
step 3
Find the distance AC

substitute in the formula
step 4
Find the perimeter

substitute the values

Answer:
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Step-by-step explanation: