I don’t know how to add intergers.How do I.it is too hard for me

1 answer:

6 0

A positive + A positive = A positive (1+2=3)

A negative + A negative = A negative (-1+(-2)=-3)

Adding a negative is like subtracting a positive (1 + (-2) = -1) this is equal to (1 - 2 = -1)

Adding a positive is like subtracting a negative (-1 + 2 = 1)

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zzz [600]

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2 years ago

True or False?The first distribution shown below has a smaller standard deviation than does the second distribution.1, 2, 3, 4,

Mandarinka [93]

Answer:

False, they have the same standard deviation

Step-by-step explanation:

Standard deviation is the distance each data value is from the mean.

While the mean of each data set will be different, the distance each data value is from this mean will be the same. This is because each set goes sequentially from 1 to 12, or from 101 to 112. The average distance from the mean will have to be the same.

To verify, using a graphing calculator, the standard deviation of the first set is 3.45. The standard deviation of the second set is also 3.45.

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2 years ago

Read 2 more answers

A race is 7/10 kilometers long. Maya ran 9 of these races. How far did she run altogether? Write your answer in simplest form.

gayaneshka [121]

Answer:

She ran

$6 \frac{3}{10} km \: or \: 6.3 \: km$