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2 years ago

Distance between -7 and 16

Mathematics

1 answer:

Kazeer [188]2 years ago

8 0

Answer: 23

Step-by-step explanation:

Add from -7 to 16

It wants to know how many are in between those numbers.

That would be 23

You can pull up a graph number line to help!

Hope this helps!!! Good luck!!! ;)

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Jane is opening a savings account with an initial deposit of $100. The bank offers a 5%

yKpoI14uk [10]

Answer:

105 dollars after a year

Step-by-step explanation:

I = (100)(0.05)(1)

I = 5

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2 years ago

Is it possible to have the same lower quartile as the minimum in a box plot?

Natalka [10]

No, bc the lower quartile should be in between the minimum and middle quartile(median) Hoped this helped!

6 0

3 years ago

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A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 138 student

yan [13]

Answer:

The 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

Step-by-step explanation:

The (1 - α)% confidence interval for the difference between population means is:

$CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}$

The information provided is as follows:

$n_{1}= 138\\n_{2}=156\\\bar x_{1}=61\\\bar x_{2}=64.6\\\sigma_{1}=18.53\\\sigma_{2}=13.43$

The critical value of z for 98% confidence level is,

$z_{\alpha/2}=z_{0.02/2}=2.326$

Compute the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 as follows:

$CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}$

$=(61-64.6)\pm 2.326\times\sqrt{\frac{(18.53)^{2}}{138}+\frac{(13.43)^{2}}{156}}\\\\=-3.6\pm 4.4404\\\\=(-8.0404, 0.8404)\\\\\approx (-8.04, 0.84)$

Thus, the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

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3 years ago

Find the gradient of the line 2x+7y=14

Alex777 [14]

Answer:

-2/7

Step-by-step explanation:

2x+7y=14

7y=-2x+14

divide by 7

y=-2/7 x+2

4 0

3 years ago

A garden table and a bench cost $600 combined. The cost of the garden table is three times the cost of the bench. What is the co

Sonja [21]

This is how I'd solve it:

bench = x x+3x=600
table = 3x 4x=600
x=150

The bench costs $150 and the table costs $450; combined, they cost $600, so it's correct. I hope this helps you!

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3 years ago

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