Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance
beam. Assume the weight of a square is 1 unit and the weight of a triangle is unknown.
1 answer:
Let the weight of triangle be x units. You are given that the weight of square is 1 unit.
1) On the left side of the balanced beam you can see 3 triangles and 5 squares. The weight on left side is 3·x+5·1=3x+5 units.
2) On the right side of the balanced beam you can see 2 triangles and 7 squares. The weight on right side is 2·x+7·1=2x+7 units.
3) If the whole system is balanced, then the weights on left and right sides are equal:
3x+5=2x+7.
Solve this equation:
3x-2x=7-5,
x=2 units.
Answer: option A
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Hey! can u post a pic or add the pic in a different question thx :33<span />
