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3 years ago

12. Which expression has the same value as 34 - 957

Mathematics

2 answers:

m_a_m_a [10]3 years ago

8 0

Answer:

I see there bo 957 ..

34 - 95 = - 61

a) 95 - 34 = 61

b) - 94 + (-34) = - 95 - 34 = -129

c) 34 - (-94) = 34 + 95 = 129

d) 34 + (-94) = 34 - 95 = -61

therefore, your answer is d

agasfer [191]3 years ago

6 0

Answer:

It would be D

Step-by-step explanation:

when there is a + in front of an expression in parentheses, the expression remains the same

34-95

Calculate the difference 34-95

which = -61 and that is what 34-95 is

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Sloan [31]

Answers:

Sample Variance = 31.03

Sample Standard Deviation = 5.57

See the table below.

===================================================

Explanation:

M refers to the midpoint of each interval. The midpoint is $M = \frac{a+b}{2}$ where a,b are the left and right endpoints.

For example, $M = \frac{0+4}{2} = \frac{4}{2} = 2$ in the first row.

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--------------------------------------------------------------------------

After we determine xbar, we subtract it from each value of M. Then we square the result to get $(M - \overline{x})^2$ . Multiply that with the column f to get the new column $f(M-\overline{x})^2$ .

This column is added to arrive at 1210 shown in the table below. Divide this over the sum of the frequencies minus 1. So we divide by n-1 = 40-1 = 39 to get roughly 31.03

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