babygirl62716
09.03.2021 •
Mathematics
Solve the following equation for a. Be sure to take into account whether a
letter is capitalized or not.
2n = a(d +9)
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Ответ:
x is the number of plates which costs $5 and y is the number of $10 plates.
the equation: 5x + 10y = 900 and y=2x
by solving these two equations, x=36 and y= 72, so the total number of plates is 108