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3 years ago

Find the gradient of the line segment between the points (-4,-5) and (2,-4).

Mathematics

1 answer:

dezoksy [38]3 years ago

8 0

Answer:

1/6

Step-by-step explanation:

gradient= change in y/ change in x

-4--5/2--4= 1/6

1/6 is the gradient

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Which of the following are rational numbers?

Dahasolnce [82]

Step-by-step explanation:

square cube 214

I think this was your answer

3 0

3 years ago

HELPPP ASAPPPPPPP YOULL GET 20 POINTS

katrin2010 [14]

Answer:

Add the cups of blue cheese to the cups of cream cheese.

2 3/8 + 1

Add the whole number part.

3 3/8

Hope this helps! :)

6 0

3 years ago

Read 2 more answers

Suppose we take a random sample of 41 state college students. Then we measure the length of their right foot in centimeters. We

Debora [2.8K]

Answer:

$ME = \frac{25.09-21.01}{2}= 1.69$

The general formula for the margin of error is given by:

$ME= t_{\alpha/2} \frac{s}{\sqrt{n}}$

And for this case the width is:

$Width= 2*t_{\alpha/2} \frac{s}{\sqrt{n}}$

And if we decrease the confidence level from 95% to 90% then the critical value $t_{\alpha/2}$ would decrease and in effect the width for this new confidence interval decreases.

As confidence level decreases, the interval width decreases

Step-by-step explanation:

For this cae we know that the sample size selected is n =41

And we have a confidence interva for the true mean of foot length for students at a college selected.

The confidence interval is given by this formula:

$\bar X \pm t_{\alpha/2} \frac{s}{\sqrt{n}}$

And for this case the 95% confidence interval is given by: (21.71,25.09)

A point of etimate for the true mean is given by:

$\bar X = \frac{21.71+25.09}{2}= 23.4$

And the margin of error would be:

$ME = \frac{25.09-21.01}{2}= 1.69$

The general formula for the margin of error is given by:

$ME= t_{\alpha/2} \frac{s}{\sqrt{n}}$

And for this case the width is:

$Width= 2*t_{\alpha/2} \frac{s}{\sqrt{n}}$

And if we decrease the confidence level from 95% to 90% then the critical value $t_{\alpha/2}$ would decrease and in effect the width for this new confidence interval decreases.

As confidence level decreases, the interval width decreases

3 0

4 years ago

Is the equation true or false

Reil [10]

Answer:

all are true

Step-by-step explanation:

if that blank spot is where youre supposed to put true or false, then yeah if you mulitply them they equal eachother for every equation

5 0

3 years ago

You have 9 identical balls, one of which is heavier than the rest. What is the smallest number of times you need to weigh the ba

Dvinal [7]

You could do this with two weighings assuming its a two pan balance - (1) place three balls on each side - if they balance out then its the remaining three that has abnormal ball (2) out of that group, place one ball on each side - if balances it out, the abnormal ball is the remaining one.

If the weighing in step (1) does not balance out, grab the group of three balls that is light or heavy and repeat step (2) described above.

7 0

3 years ago