2 years ago

From 6x2−7xy+8y2 subtract the sum of x2−3xy−y2 and 2x2+5xy−4y2

Mathematics

1 answer:

Gemiola [76]2 years ago

4 0

° represents square: power of 2.
Answer: 8 - 9xy + 13y°- x°

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Step-by-step explanation:

Given;

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final mass of the element, mf = 1 g

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$1 = 500 (0.5)^{\frac{t}{34}} \\\\\frac{1}{500} = (0.5)^{\frac{t}{34}}\\\\log(\frac{1}{500}) = log [(0.5)^{\frac{t}{34}}]\\\\log(\frac{1}{500}) = \frac{t}{34} log(0.5)\\\\-2.699 = \frac{t}{34} (-0.301)\\\\t = \frac{2.699 \times 34}{0.301} \\\\t = 304.8 \ s$

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