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2 years ago

I need help please it’s urgent I don’t get it

Mathematics

1 answer:

JulsSmile [24]2 years ago

4 0

Answer: m∠RQS=104° and m∠TQS=76°

Step-by-step explanation:

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The larger triangle is dilated to form the smaller triangle.

Vadim26 [7]

Answer:

I’m pretty sure it’s, B. 1/2

Step-by-step explanation:

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2 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

Which of these is the algebraic expression for "some number to the power of 6?"

Verizon [17]

Your answer is C. x6

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2 years ago

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Solve for x x- 2x (12 - 1/2) =2 (4-2x) +20 A.-14/9 B.-9/14 C.14/9 D.9/14

MrMuchimi

Answer:

Step-by-step explanation:

-22x=-4x+28

-18x=28

x=-28/18=-14/9

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2 years ago

209 divided by 3 estimate

SpyIntel [72]

Answer:

The quotient is estimated to be 69.

Other:

Brainliest? Thanks!

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