Solve by substitution
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8. Solve by substitution.
52. Unknown numbers. Find two numbers whose ratio is 4 to 3 and are such that the sum of their square is 100.
4. Find the value of each determinant.
2. Find the values of the variables for which each statement is true.
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Solution Summary
The expert solves by substitution in various problems. The value of the variables for which each statement is true is found.
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Please show work.
8. Solve by substitution.
Solution:
From x - y = 13 => x = y + 13
Substitute x = y + 13 into
3(y + 13) + 4y = 4
3y + 39 + 4y = 4
7y = - 35
y = -5
Now x = y + 13 = -5 + 13 = ...
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