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3 years ago

The circumference of a circle is 50.24 meters. What is the circle's radius? Use 3.14 for

Mathematics

2 answers:

Charra [1.4K]3 years ago

7 0

Answer

radius 25.12

Step-by-step explanation:

Serhud [2]3 years ago

6 0

the formula for the circumference of a circle is pi time diameter.

reverse this and do: 50.24/3.14

this is 16.

the diameter of the circle is 16 meters

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153 of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary sch

Juli2301 [7.4K]

Answer-

It is reasonable that the state education department claims the percentage for the entire state is 63%.

Solution-

153 out of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary school students than they do now as high school students.

Here,

x = 153,

n = 258,

Then,

$\text{sample proportion}=p=\dfrac{153}{258}=0.5930=59.30\%$

And,

$\text{Margin Error}=2\times \sqrt{\dfrac{p(1-p)}{n}}$

Putting the values,

$\text{ME}=2\times \sqrt{\dfrac{(0.5930)(1-0.5930)}{258}}\\\\=2\times \sqrt{\dfrac{(0.5930)(0.407)}{258}}\\\\=2\times \sqrt{\dfrac{0.2414}{208}}\\\\=2\times 0.0341\\\\=0.0682\\\\=6.82\%$

The interval would be,

$=(59.30-6.82,\ 59.30+6.82)\\\\=(52.48,\ 66.12)$

As population proportion p=63% lies in this interval, so it is reasonable.

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4 years ago

Convert quinary numbers into decimal numbers 340⁵ 1203⁵ 2113⁵ 4444⁵ 1234⁵

Inessa [10]

Answer:

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Step-by-step explanation:

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7 0

3 years ago

Find the accumulated value of the deposit $2500 made in simple interest for 3.5 years at 5% rate of interest per year.

Angelina_Jolie [31]

2500 x .05 x 3.5 = 437.5 or 437.50

7 0

3 years ago

Read 2 more answers

Use the discriminant to identify the number and type of solutions for the equation -5x2 + 4x + 1 = 0.

ASHA 777 [7]

The number of solutions in the equation is (b) two real solutions

<h3>How to calculate the number and type of solutions?</h3>

The quadratic equation is given as

-5x2 + 4x + 1 = 0.

Rewrite properly as

−5x² + 4x + 1 = 0

The discriminant of a quadratic equation is calculated using

d = b² - 4ac

In the equation −5x² + 4x + 1 = 0, we have

a = -5, b = 4 and c = 1

Substitute a = -5, b = 4 and c = 1 in d = b² - 4ac

So, we have

d = (4)² - 4 * (-5) * (1)

Evaluate

d = 36

Because the discriminant is greater than 0, the equation has two solutions and the type of solution is real solution

The circumference of a circle is 50.24 meters. What is the circle's radius? Use 3.14 for ​

The circumference of a circle is 50.24 meters. What is the circle's radius? Use 3.14 for