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3 years ago

Complete the equation of this circle:

Mathematics

2 answers:

adell [148]3 years ago

6 0

Answer:

Step-by-step explanation:

Natasha2012 [34]3 years ago

6 0

Answer:

Step-by-step explanation:

the center of the circle is A(2,-2) , the radius is the distance from A( center to the circumference) is 3 points

(x-2)^2+(y+2)^2=r^2 r=3 so r^2=9

(x-2)^2+(y+2)^2=9

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We usually get 25 homework problems each night, but the number of problems was decreased by 3. How many homework problems do we

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3 years ago

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drug sniffing dogs must be 95% accurate in their responses because their handlers don't want them to miss durgs and also don't w

GenaCL600 [577]

Answer:

95% Confidence interval: (0.8449,0.9951)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 50

Number of times the dog is right, x = 46

$\hat{p} = \dfrac{x}{n} = \dfrac{46}{50} = 0.92$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.92 \pm 1.96(\sqrt{\dfrac{0.92(1-0.92)}{50}})\\\\ = 0.92\pm 0.0751\\\\=(0.8449,0.9951)$

(0.8449,0.9951) is the required 95% confidence interval for the proportion of times the dog will be correct.

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2 years ago

Aaron gives an estimate of 2 for the quotient in a division problem his teacher says his estimate is reasonable if the divisor i

viva [34]

B because it's the closest to 8

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3 years ago

The lid for a circular plastic food container has a diameter of 9 cm.

Levart [38]

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3 years ago

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3 years ago