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Arturiano [62]
3 years ago
7

Please help :) I’m really in need of assistance and would appreciate it.

Mathematics
1 answer:
BaLLatris [955]3 years ago
4 0

Answer:

D) 0.5x^3y + 4x^2 y^2 - 2xy^3

Step-by-step explanation:

Set up an equation to model the situation,

(-0.5xy)(x^2 + 8xy - 4y^2)

Distribute, multiply each term in the parenthesis with the term outside of the parenthesis. Don't forget the laws of exponents, when one multiplies two exponents, with the same base, then one adds the two exponents. A number with no exponential term is two the first degree meaning that it is to the power of one.

-0.5x^3 y - 4x^2 y^2 + 2xy^3

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If the scores of a math test are normally distributed with an average score of 76 and a standard deviation of 5, what percentage
Afina-wow [57]

Answer:

Step-by-step explanation:

Since the scores of the math test are normally distributed, we would apply the formula for normal distribution which is expressed as

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4 years ago
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Answer:

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