The perimeter of a triangle is 84 meters. The longest side of the triangle is 7 meters less than twice the length of the shortes
t side, x. The middle side is 7 meters longer than the shortest side. What is the length of each side of the triangle?
2 answers:
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⇒ 
is a improper fraction.
as a mixed number would be 4 
⇒10 x 4 = 40
⇒40 + 9 = 49
= 4
⇒ANSWER = 4
⇒10 x 4 = 40
⇒40 + 9 = 49
⇒ANSWER = 4
Answer:
x = 12
Step-by-step explanation:
The segment from the vertex to the base is a perpendicular bisector.
Using Pythagoras' identity on the right triangle on the right.
( x )² + 3² = (
)² , that is
x² + 9 = 45 ( subtract 9 from both sides )
x² = 36 ( multiply both sides by 4 )
x² = 144 ( take the square root of both sides )
x = = 12
