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3 years ago

Find the distance between the two points in simplest radical form. (-1,2) and (-7, -6)

Mathematics

1 answer:

weeeeeb [17]3 years ago

3 0

Answer:

Step-by-step explanation:

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Use the information given to write the equation of the circle

iren2701 [21]

Answer:

i think you would multiply them but I'm not sure

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3 years ago

5) Ang Electronics, Inc., has developed a new HD DVD. If the HD DVD is successful, the present value of the payoff (at the time

Radda [10]

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Step-by-step explanation:

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3 years ago

Are the ratios 30:12 and 40:16 equal if reduced?

serg [7]

Yes, borh ratios when reduced are 5:2. 30:12 is 5:2 because both are divisible by 6. 30/6=5 and 12/6=2. 40:16 is 5:2 because both are divisible by 8, 40/8=5 and 16/8=2

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3 years ago

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A sample of 12 measurements has a mean of 16.5, and a sample of 15 measurements has a mean of 18.6. Find the mean of all 27 meas

Wewaii [24]

Answer: $17.67$

Step-by-step explanation:

Given

Sample of 12 measurements has a mean of 16.5 and

a sample of 15 measurements has a mean of 18.6

Take $\bar{x_1},n_1$ be the mean and no of measurements

and $\bar{x_2},n_2$ be the mean and no of measurements in second case

$\therefore \bar{x_1}=\dfrac{\sum a_1}{n_1}\\\\\Rightarrow \sum a_1=\bar{x_1}\times n_1\\\\\Rightarrow \sum a_1=198\quad \ldots(1)$

Similarly,

$\therefore \bar{x_2}=\dfrac{\sum a_2}{n_2}\\\\\Rightarrow \sum a_2=\bar{x_2}\times n_2\\\\\Rightarrow \sum a_2=279\quad \ldots(2)$

Mean of 27 measurements

$\Rightarrow \bar{x_3}=\dfrac{\sum a_1+\sum a_2}{n_1+n_2}\\\\\Rightarrow \bar{x_3}=\dfrac{198+279}{12+15}\\\\\Rightarrow \bar{x_3}=\dfrac{477}{27}\\\\\Rightarrow \bar{x_3}=17.67$

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3 years ago

100 POINTS

elena-14-01-66 [18.8K]

Answer:

The slope is -2 because, for every value past on the x-coordinate, the line goes 2 values down.

Step-by-step explanation:

I hope that this helps! :)

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3 years ago

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