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rewona [7]
3 years ago
7

−(−49) = −49 true or false?

Mathematics
1 answer:
Alex787 [66]3 years ago
5 0
False.

Whenever you see a negative sign next to another negative sign, you will always get a positive. So -(-49) is equal to +49
With that information we can determine that it is not equal to negative 49.
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As your sample size grows larger, the n - 1 adjustment for the standard deviation has a:______
kumpel [21]

As your sample size grows larger, the n - 1 adjustment for the standard deviation has a smaller impact on the estimates of standard deviation.

<u>Step-by-step explanation:</u>

The average (mean) of sample's distribution seems to be the same as the distribution mean at which samples were taken. The means of mean distribution will not change. However, the standard deviations for the samples mean is the standard deviations of the primary distribution divided by square roots of the samples size.

The standard deviations of means decreases as the samples size increases. Likewise, when the samples size decreases, the standard deviations for the samples mean increases. So, there is a little impact on standard deviations estimation when sample size increases.

8 0
3 years ago
A graph is a straight line through the point (0, 5). Can the graph represent a proportional relationship? Explain.
Snezhnost [94]

Answer:

The graph cannot represent a proportional relationship

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and <u><em>the line passes through the origin</em></u>  (0,0)

That means----> The x-intercept and the y-intercept of the line must to be the origin (0,0)

If the given line passes through the point (0,5), then the line not passes through the origin

therefore

The graph cannot represent a proportional relationship

3 0
3 years ago
Is this relation a function? (PLEASE ANSWER!) last time i was ignored
ANTONII [103]
No it is not, because the value 3 in the domain is repeating, therefore it is not a function
3 0
3 years ago
What information would allow you to identify angle BFA and angle AFE as complementary angles?
timama [110]
Two angles are complementary if they add up to 90 degrees so we would need to know angle BFE is 90 degrees to identify it as complementary.
7 0
3 years ago
Find range<br>of<br>f(x) =<br><img src="https://tex.z-dn.net/?f=1%20%5Cdiv%20%28%20%7Cx%7C%20%20-%20x%29" id="TexFormula1" title
SCORPION-xisa [38]

Step-by-step explanation:

We need to find thr range if

\frac{1}{ (|x|  - x)}

The absoulte value of something is positive.

So

\frac{1}{x - x}  =  \frac{1}{0}

This function isn't possible so no range exist.

7 0
3 years ago
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