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4 years ago

Find the area of the shaded section

Mathematics

2 answers:

Phoenix [80]4 years ago

5 0

Answer:

120

Step-by-step explanation:

lina2011 [118]4 years ago

4 0

Answer: 16.76

Explanation:

1. A circle is 360°, we know the white sections are both 120°.

120° + 120° = 240°

360° - 240° = 120°

Therefore the shaded section is 120°

2. Using A = πr^2, we can find the total area of the circle. We know the radius is 4 from the given data.

A = π (4)^2

A = π (16)

A = 50.27

3. 120° is 1/3 of 360°, so we can divide the area we found by 3 to find the area of the shaded section.

A = 50.27 / 3

A = 16.755

A = 16.76

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PRACTICE ANOTHER The administration of a large university wants to take a random sample to measure student opinion of a new food

Reil [10]

Answer:

81 samples

Step-by-step explanation:

According to the empirical rule :

Possible values of the sample mean is within 3 standard deviations of the population mean :

μ ± 3 sd(x) ; sd(x) = standard deviation of sampling distribution.

3 * sd(x) = 1

sd(x) = 1/3

Recall:

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sd(x) = σ / sqrt(n)

1/3 = 3 / sqrt(n)

Square both sides

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3 0

3 years ago

Consider the function f(x) = 6sin(x^2) on the interval 0 ≤ x ≤ 3.

Vitek1552 [10]

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4 0

3 years ago

Read 2 more answers

Which equation represents the line that passes through the points (2, 4) and (1, -3)?

zhannawk [14.2K]

Answer:

y = 7x - 10

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (2, 4) and (x₂, y₂ ) = (1, - 3)

m = $\frac{-3-4}{1-2}$ = $\frac{-7}{-1}$ = 7, thus

y = 7x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (2, 4), then

4 = 14 + c ⇒ c = 4 - 14 = - 10

y = 7x - 10 ← equation of line

6 0

4 years ago

Need answer asap.thanks

Marrrta [24]

Answer:

$0.46=\frac{23}{50}$

Step-by-step explanation:

To write any decimal as a fraction you divide by 1 and multiply by a number (ranging from 10, 100, 1000 etc.) that will make 0.46 a whole number, this will explain:

Let x = $\frac{0.46}{1}$

10x = $10*\frac{0.46}{1} =\frac{4.6}{10}$

100x = $100*\frac{0.46}{1}=\frac{46}{100}$ this is our perfect fraction, now we simplify later

100x - 10x = $\frac{46}{100} -\frac{4.6}{10}$

90x = $\frac{46}{100} -\frac{4.6}{10} =0$ this is to confirm both fractions are equal

x is the same as $\frac{0.46}{1}$ as $\frac{4.6}{10}$ as $\frac{46}{100}$ but here x = $\frac{46}{100}$ because a fraction has to have no decimals.

So 0.46 is equal any of these values, as a fraction, on the other hand, it's improperly equal to $\frac{46}{100} = \frac{23}{50}$ here I divided by 2 to bring down the proper fraction. (fraction at its simplest form)

6 0

3 years ago

Hey guys plz help with this one i beg

kvv77 [185]

Answer:

102

Step-by-step explanation:

i think it is the ans.

6 0

3 years ago