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2 years ago

Please answer the question down below!! <3

Mathematics

1 answer:

Kryger [21]2 years ago

8 0

Answer:

4 inches

Step-by-step explanation:

In a regular pentagon, all sides are equal in length

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1/6 into a decimal and percent WILL REPORT AND GIVE BRAINLYEST

Vlada [557]

Answer:

1/6 = 0.167 or 16%

Step-by-step explanation:

Okay, so to go from a fraction to a decimal, you really just have to put the dot in the right place:

1/6 = 0.167 (rounded)

So 1/6 is 0.167 as a decimal

So to find the percentage:

0.167 x 10 = 16.7

So 1/6 is 16.7%

hope this helps:)

7 0

3 years ago

Read 2 more answers

You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proporti

Ksenya-84 [330]

Answer:

We need a sample size of at least 369.

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 level of $1-\alpha$ , 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 margin of error is:

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

For this problem, we have that:

$\pi = 0.32$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

How large of a sample size is required?

We need a sample size of at least n.

n is found when $M = 0.04$ . So

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

$0.04 = 1.645\sqrt{\frac{0.32*0.68}{n}}$

$0.04\sqrt{n} = 1.645\sqrt{0.32*0.68}$

$\sqrt{n} = \frac{1.645\sqrt{0.32*0.68}}{0.04}$

$(\sqrt{n})^{2} = (\frac{1.645\sqrt{0.32*0.68}}{0.04})^{2}$

$n = 368.02$

Rounding up

We need a sample size of at least 369.

5 0

3 years ago

Ella scored 16 points per game. kate total points for the season were 22 less than ellas. the following expression shows kates t

Alekssandra [29.7K]

The variable z represents how many games that ella played during the season

4 0

3 years ago

Read 2 more answers

Prove that the two circles shown below are similar. Circle X is shown with a center at negative 2, 8 and a radius of 6. Circle Y

jolli1 [7]

Answer:

They are similar for their radii, and perimeters have the same ratio: 2

Step-by-step explanation:

The similarity of circles is proved, when we can compare the ratio, between the two radii and the two perimeter and it is the same.

2. The Circle X, has a radius of 6 and the circle Y has the radius of 3.

So let's do it:

$\frac{R_{x}}{R_{y}} =\frac{6}{3} =2$

3. Now let's check the Perimeters:

$\frac{2P_{x}}{2P_{y}}=\frac{2\pi*6}{2\pi*3}=2$

4. In addition to this, we can do this Geometrically, by inserting the Circle Y within the Circle X, and if dilate by the scale factor of 2 we'll have these two circumferences coincide.

8 0

3 years ago

A bag contains yellow marbles and green marbles, 25 in total. The number of yellow marbles is 4 more than 2 times the number of

bogdanovich [222]

Answer: There are 18 yellow marbles

Step-by-step explanation: 7 green marbles mean 18 yellow. 7+18=25

5 0

3 years ago