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Tomtit [17]
3 years ago
8

Pls help me expand this expression

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
7 0

Answer:

just be smart

Step-by-step explanation: (2x)

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Convert 39 meters squared to yard square
horrorfan [7]

Answer:

I used this converter, very helpful

Step-by-step explanation:


5 0
3 years ago
Why don't we measure spread about the mean by simply averaging x − x , the deviations of individual data values from their mean?
skad [1K]

Answer:

Because this spread will add up to zero

Step-by-step explanation:

Mean defines the center of the data. Some values are below this center and some values are above this center.

For the values which are below the center (i.e. less than the mean), when mean is subtracted from these values, this results in negative numbers.

For the values which are above the center(i.e. greater than the mean), when mean is subtracted from these values, this results in positive numbers.

When these negative and positive numbers are summed together, as it is, they cancel out each other, leaving an answer equal to zero, which would be meaningless. As a spread of 0 would mean all data values are the same, when infact they aren't.

To avoid this, the difference of mean from the data value is squared, so that we can get all positive values, and then these values are added up together to calculate the spread of the data.

Conclusion:

The average of deviations of individual data from the mean will result in answer equal to zero, as a result they are squared first before finding the average.

7 0
3 years ago
Multiply. 5 x 1 1/3<br> Answer with a mixed number in simplest form.
Crank

Answer:

6 2/3

Step-by-step explanation:

5/1 * 4/3 = 20/3

20/3 = 6 with a remained of 2

4 0
3 years ago
Read 2 more answers
Amanda is building a dollhouse that is a model of her real house with a scale factor of 1/20. In the real house, the kitchen mea
fredd [130]

Answer:

0.5 feet × 0.6 feet

Step-by-step explanation:

10/20 = 0.5

12/20 = 0.6

7 0
3 years ago
Chau made $252 for 18 hours of work. At the same rate, how much would he make for 9 hours of work?
Akimi4 [234]

Answer:

$126

Step-by-step explanation:

$252/$18=$14 dollars per hour.

now take 14*9 and you get $126.

7 0
3 years ago
Read 2 more answers
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