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yaniravivas79
18.03.2020 •
Mathematics
Triangle ABC has been dilated about point A by a scale factor of 3.
What are the lengths, in units, of the three sides of AA'B'C'?
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Ответ:
First type (x) = 20 pounds
Second type(y) = 30 pounds
Step-by-step explanation:
Consider,
First type as x and second type as y.
Making linear equations:
x + y = 501)
2x + 7y = (5*50)
2x + 7y = 2502)
Solving above two simultaneous equations:
From first equation: y = 50-x
put this into second equation:
2x + 7(50-x) = 250
Solving for x:
2x + 350 -7x = 250
-5x = -100
x = 20
Putting x = 20 in first equation:
20 +y = 50
y = 50-20 = 30
Therefore,
x = 20
y = 30