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jeka94
3 years ago
5

Expand (3x-4y)^3 please answer thank you

Mathematics
2 answers:
WARRIOR [948]3 years ago
5 0
27x^3-108x^2y+144xy^2-64y^3
ale4655 [162]3 years ago
3 0

Answer:

Step-by-step explanation:

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Josh and Lucy share some money in the ratio of 3 : 7 they share 84 in total how much money does Josh receive
Ann [662]
27.30 is the answer
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2 years ago
A study on the latest fad diet claimed that the amounts of weight lost by all people on this diet had a mean of 23.2 pounds and
erica [24]

Answer:

The standard deviation of the sampling distribution of sample means would be 0.8186.

Step-by-step explanation:

We are given that

Mean of population=23.2 pounds

Standard deviation of population=6.6 pounds

n=65

We have to find the standard deviation of the sampling distribution of sample means.

We know that standard deviation of the sampling distribution of sample means

=\frac{\sigma}{\sqrt{n}}

Using the formula

The standard deviation of the sampling distribution of sample means

=\frac{6.6}{\sqrt{65}}

=0.8186

Hence,  the standard deviation of the sampling distribution of sample means would be 0.8186.

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3 years ago
Apple weights in an orchard are normally distributed. from a sample farmer fred determines the mean weight of a box of apples to
Serjik [45]
<span>Mean = 270 Standard deviation = 10 x = 255 Formula for z-score, z = (x - mean)/SD z = (255 - 270) / 10 => z = -15 / 10 => z = -1.5 So by referring to z-table, -1.5 correlates to 0.0668 that implies to 0.07 So 7% of the boxes of Apples weight less than 255oz. The percentage of boxes is in the range of 255 oz and 270 oz, Now calculating the requiring percentage 50% - 7% = 43%</span>
7 0
3 years ago
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Factor 24m-12p+7224m−12p+7224 - 12p + 72 to identify the equivalent expressions.
lord [1]

Answer:

C, A

Step-by-step explanation:

If you would like me to explain, I could but this would be difficult. Trust me.

7 0
3 years ago
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What is 7,230,000,000 in scientific notation <br> What is 0.0000865 in scientific notation
Gekata [30.6K]

Answer:

7,230,000,000 = 7.23 x 10 to the 9th power. 0.0000865 = 8.65 x 10 to the negative 5th power.

Step-by-step explanation:

7 0
3 years ago
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