2alshawe201
11.11.2020 •
Mathematics
Which rational expression is undefined when x = 0?
• 5x²-4/3x-3
• 6x^2/9x - 3
• 8x + 6/-x²+1
• 4x-8/- 2x²
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Ответ:
Your mother,
Your father,
my girlfriend,
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and chikEnWINgZ
Ответ:
her mother's age will be the double of Mary's age
i.e. 7X + 20 = 2(X + 20)
7X + 20 = 2X + 40
5X = 20
. Mary's present age, = 20/5 = 4 years