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3 years ago

Write an addition equation with a positive addend and negative addend and a resulting sum of -8

Mathematics

1 answer:

Ierofanga [76]3 years ago

7 0

-18 + 10 = -8

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When randomly choosing bills from a cup of bills that contains a $1 bill a $2 bill a $5 bill a $10 bill a $20 bill and a $50 bil

Nesterboy [21]

Answer:

1/36

Step-by-step explanation:

Given the sample space

S= [$1, $2, $5, $10, $20, $50] = 6

Hence the probability of choosing a

$5 bill is

Pr($5) = 1/6

Also the probability of choosing a $20 bill is

Pr($20) = 1/6

Therefore the probability of choosing a $5 bill and a $20 bill

Pr($5,$20) = 1/6*1/6= 1/36

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4 years ago

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A sample of 8 buttons is randomly selected and the following diameters are measured in inches. Give a point estimate for the pop

kenny6666 [7]

Answer:

$\bar X= \frac{1.83+1.85+1.79+1.73+1.69+1.74+1.76+1.70}{8}= 1.76125$

Now we can estimate the population variance with the sample variance given by:

$s^2 = \frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}$

And replacing we got:

$s^2 = 0.0033839$

And the estimator for the population deviation $\sigma$ is given by :

$\hat \sigma = \sqrt{s^2}= \sqrt{0.0033839}= 0.058172$

Step-by-step explanation:

For this case we have the following data given:

1.83,1.85,1.79,1.73,1.69,1.74,1.76,1.70

First we need to calculate the mean with the following formula:

$\bar X= \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X= \frac{1.83+1.85+1.79+1.73+1.69+1.74+1.76+1.70}{8}= 1.76125$

Now we can estimate the population variance with the sample variance given by:

$s^2 = \frac{\sum_{i=1}^n (x_i -\bar X)^2}{n-1}$

And replacing we got:

$s^2 = 0.0033839$

And the estimator for the population deviation $\sigma$ is given by :

$\hat \sigma = \sqrt{s^2}= \sqrt{0.0033839}= 0.058172$

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4 years ago

HELP REALLY QUICK 15 POINTS!

leva [86]

Answer:

52.2%

Step-by-step explanation:

The total workforce is 11 + 12 = 23

Fraction of men = $\frac{men}{total}$ = $\frac{12}{23}$

To change the fraction to a percentage multiply the fraction by 100%

percent of men = $\frac{12}{23}$ × 100% = 52.2% ( to 1 dec. place )

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4 years ago

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Answer: Alex is making a clock to give to his grandfather. To make the clock, he saws a slice of wood from a cylindrical log. Wh

ss7ja [257]

It would be circular since it was cut from a cylindrical log.

Hope This Helps You!
Good Luck Studying :)

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3 years ago

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Two interior angles of a triangle each measure 34 what is the measure of the third interior angel?

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