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2 years ago

Find the area if the figure using 3.14

Mathematics

1 answer:

Veronika [31]2 years ago

8 0

The area of the square is 9, the area of all the semi circles added together is 15.7, when you add them together you get 24.7

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Help me with this please

snow_tiger [21]

B) y=34.84x-2054 I believe that is the right answer

7 0

2 years ago

Differentiate 2sin(5x-3)

anygoal [31]

$f(x)=2\sin(5x-3)\\
f'(x)=2\cos(5x-3)\cdot5=10\cos(5x-3)$

3 0

2 years ago

A circle with a radius of 6cm sits inside a circle with radius of 9cm

pshichka [43]

Answer:

Please provide a question so we can answer, thank you.

5 0

3 years ago

Read 2 more answers

Nemo and Dory are meeting Crush at the tide pool. Nemo must swim 6 ¾ miles while Dory must swim 4 1/2 miles to reach their desti

gayaneshka [121]

Answer:

1.5 times.

Step-by-step explanation:

6.75 / 4.5 = 1.5.

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2 years ago

Researchers ask a random sample of 1,001 adults nationwide whether they favor or oppose the legalization of marijuana. Fifty-fiv

natima [27]

Answer:

b. It will decrease by a factor of 2

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The lower end of the interval is given by:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}}$

The upper end of the interval is given by:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}}$

The length of the interval is the subtraction of the upper end by the lower end, so it is:

$L = 2z\sqrt{\frac{\pi(1-\pi)}{n}}$

This means that the length is inverse proportional to the square root of the size of the sample.

So, if the sample size is multiplied by 4, the length of the interval is going to decrease by a factor of 2.

4 0

2 years ago