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love history [14]
3 years ago
14

-7-(-9) = What is the answer to the question

Mathematics
2 answers:
Rudiy273 years ago
7 0
Answer: 2

-7 - (-9) could be visualized as -7 + 9

-7 + 9 is 2
Roman55 [17]3 years ago
3 0
The answer is positive 2
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If each value of the data of the poplation function is doubled which of the following is not correct?
Anna35 [415]

Answer:

The variance is doubled; C

Step-by-step explanation:

Here, we want to select what will be wrong if every number in the dataset is doubled

A. This is correct

The mean is the average of the numbers which is calculated by dividing the sum of the numbers by the count of the numbers

By doubling the numbers, we have simply doubled the sum while the count is same

So what we have as the result of the division will be 2 times what we had initially making the mean doubled

B. The mode is doubled

Yes, this is correct

The mode is the highest in frequency

Doubling all numbers will not double their frequencies but their values. So the number that was the mode in the previous case will be the same but now doubled

D. The median is doubled

This is correct

The median deals with the middle number.

Since all numbers are doubled in the present case, the median to is also doubled along side as the numbers are now twice what they were evenly

C. This is wrong

The variance has to do with the spread of data

We are actually subtracting values

Since we are doubling across board, the difference between the numbers is the same as this, the variance cannot change

We can look at this from the angle that all others are measures of central tendency looking at having a central figure while the variance is a measure of spread.

3 0
2 years ago
Please answer fast however answer i will make brainilest
Marizza181 [45]

Answer:

B

Step-by-step explanation:

B

4 0
3 years ago
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Cody is selling chocolate and white chocolate candy bars for a school fundraiser. 30% of the candy bars sold have been white cho
aniked [119]
24/.30 is how you would get your answer and 80
8 0
3 years ago
Find two numbers a and b such that a+b=0 and ab=36
PolarNik [594]

Answer:

b = 6i   then a = -6i

b = -6i   then a = 6i

Step-by-step explanation:

a+b=0

ab=36

a = -b

a(b) = 36

-b * b = 36

- b^2 = 36

b^2 = -36

Take the square root of each side

sqrt(b^2) = sqrt(-36)

b =± 6i

a = - (± 6i)

so b = 6i   then a = -6i

b = -6i   then a = 6i

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3 years ago
Which values of xwould make a polynomial equal to zero if the factors of the
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C.-2 and -11 that would be the answer.
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3 years ago
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