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3 years ago

Kyle is making a frame for a rectangular piece of art. The length of the frame is 3 times the width, as shown below.

Mathematics

1 answer:

cupoosta [38]3 years ago

5 0

Answer:

Step-by-step explanation:

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a climbing gym charges 10$ to climb each day a pair of climbing shoes cost 84$ it costs $169 to buy 6 days of climbing one pair

iogann1982 [59]

The harness cost 25.
(10×6)+84+x=169
169-84=85
85-60=25
x=25

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3 years ago

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A sample of 5 buttons is randomly selected and the following diameters are measured in inches. Give a point estimate for the pop

Helen [10]

Answer:

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

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

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

And replacing we got:

$\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072$

And for the sample variance we have:

$s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003$

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance $\sigma^2$

$E(s^2) = \sigma^2$

Step-by-step explanation:

For this case we have the following data:

1.04,1.00,1.13,1.08,1.11

And in order to estimate the population variance we can use the sample variance formula:

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

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

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

And replacing we got:

$\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072$

And for the sample variance we have:

$s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003$

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance $\sigma^2$

$E(s^2) = \sigma^2$

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3 years ago

What is the slope of the function below?<br> y=3x+5 please help!!!

ladessa [460]

X=-5/3 it’s a fraction

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3 years ago

-10x+45 find x when x =15

leonid [27]

Your answer is -105 pal

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2 years ago

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Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are added toge

aleksklad [387]

Answer:

The first equation must be multiplied by 18 and second equation must be multiplied by 8

Step-by-step explanation:

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2 years ago