The equation and solution for the balanced beam are x + 5 = 7 and x = 2, respectively. (Correct choice: A)
<h3>How to apply linear equation to solve a weights problem</h3>
In this problem we have a system at <em>equilibrium</em> consisting in blue box of unknown quantity (x) and 12 red cylinders with a weight of 1 each, 5 on the left and 7 seven on the right. To be at <em>equilibrium</em> must own the same weight on both sides. The situation can be modeled by the following <em>linear</em> equation:
x + 5 = 7
x = 7 - 5
x = 2
The blue box has an equivalent weight of two red cylinders.
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Answer:
×=1 y= -2
Step-by-step explanation:
solve the equations simultaneously
2x-3y=8
4x+3y=-2
Answer:
slope: -3/5
y-intercept (0,3)
x - y
0 3
5 0
Step-by-step explanation:
I just did it
Answer:
80 and 96
Step-by-step explanation:
80 and 96