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1 year ago

The perimeter of the triangle shown is 89 meters. Find the length of each side.

Mathematics

2 answers:

natulia [17]1 year ago

4 0

<em>Greetings from Brasil...</em>

The perimeter is the sum of all sides of the triangle. In this case

P = (2X) + (X) + (4X - 9)

as P = 89

89 = (2X) + (X) + (4X - 9)

89 = 7X - 9

7X = 98

X = 98/7

X meters = X = 14

---------------------------------------------

2X:

2X meters = 2 · X = 2 · 14 = 28

---------------------------------------------

(4X - 9):

(4X - 9) meters = (4 · X - 9) = (4 · 14 - 9) = (56 - 9) = 47

olga55 [171]1 year ago

3 0

X=14
2x=28
4x-9=47

you solve for x after you add all the sides

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Step-by-step explanation:

Given system of equations are

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$A^{-1} ={ \left[\begin{array}{c \c} {{\frac{1}{6} }}&{\frac{5}{6}}\ \\ {{\frac{1}{6} }}&{\frac{-1}{6}} \end{array}\right]}$

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