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Tju [1.3M]
3 years ago
5

A student can buy notebooks for .40 each and pens for .25 each Ben needs to have at least 8 notebooks he has a total of $5 to sp

end graph
Mathematics
1 answer:
galben [10]3 years ago
4 0

Answer:

He would spend at least $3.20 for the notebooks. I'm not sure what the rest of the question is, if it is long, but that should at least help!~

Step-by-step explanation:


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ohaa [14]
The answer is -3, i had a test with the same question
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2 years ago
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A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?
VladimirAG [237]

Answer:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

Step-by-step explanation:

For this case we know the population deviation given by:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

\bar X \sim N(\mu ,\frac{\sigma}{\sqrt{n}})

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

4 0
3 years ago
Given the point P(4, 2) and T(x,y)=(x+1, y+3), what are the coordinates of T(P)? *
Nimfa-mama [501]

Answer:

T (5, 5)

Step-by-step explanation:

T(P)= (x+1, y+3) = (4+1, 2+3)

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4 years ago
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White raven [17]

Answer:

domain: {x | x is a real number}

range: {y l y> -8}

Step-by-step explanation:

f(x) = 4x² – 8 is a parabola, a U shape.

Since the stretch factor, 4, is positive, it opens up, there it will have a minimum value, the lowest point in the parabola.

y > -8  because the minimum is -8.

Parabolas do not have restricted "x" values. "4" does not restrict x because it is the stretch factor, which determines how wide the parabola is.

Quadratic standard form:

f(x) = ax² + bx + c

"a" represents how wide the graph is. If it's negative it opens down, if it's positive it opens up.

"b", if written, tells you it is not centred on the y-axis. It is not written, so the vertex is on the y-axis.

"c" is the y-intercept. In this case, since b = 0, it is also the minimum value.

7 0
3 years ago
Find the slope of the line.<br> Can somebody please help me and/ or explain ?
Olegator [25]

Answer:

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Step-by-step explanation:

Start at a point where the line intersects a firm coordinate like y=2 then use rise/run rise is vertical and run is horizontal count from the intersection up to where the line intersects another firm point in this case y=6  then count the run which lands on x=-2 y=6 which gives you the slope of 4/-2

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