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3 years ago

What is the circumference of the circle shown below?

Mathematics

2 answers:

Wittaler [7]3 years ago

7 0

I think the answer is D but in not sure

antoniya [11.8K]3 years ago

7 0

$\bold{CIRCUMFERENCE \: OF \: THE \: CIRCLE}$

The circumference of a circle is the distance around the outer edge of a circle. With other shapes, we can find the perimeter of the circle. The perimeter is the distance around a polygon. Circles are not polygons because they are not made of line segments.

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$\bold{P=2 \times \pi \times r}$

$\bold{P=2×3.14×19.50}$

$\bold{P=6.28 \times 19.50}$

$\bold{P=122.46}$

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$\boxed{ \boxed{ \boxed{ \bold{c. \red{122.4 \: cm}}}}}$

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$\bold{BRAINLYMENTALMENTE}$

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Write an equation for the line in point slope form through the points (2, −6) and (−1, −8).

igomit [66]

Let point A be $(2, -6)$ and point B $(-1, -8)$

$m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{-8 - (-6)}{-1 - 2} = \frac{-8 + 6}{-1 -2} = \frac{-2}{-3} = \frac{2}{3}$

Use the point-slope formula and whichever point you want as , in this case I'll use

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3 years ago

HELP TUTOR…<br> ss<br> z<br> z<br> z<br> z

kondor19780726 [428]

Answer:

A)σ = 15.37 miles per hour

B) σ = 55.10 miles per hour

C) 39.73 miles per hour

Step-by-step explanation:

Formula for standard deviation is;

σ = √(Σ(x - μ)²)/(n - 1)

A) For large wild cats;

μ = Σx/n = (70 + 40 + 30 + 40 + 35 + 35 + 35 + 35 + 10)/9 = 36.67

σ = √((70 - 36.67)² + (40 - 36.67)² + (30 - 36.67)² + (40 - 36.67)² + (35 - 36.67)² + (35 - 36.67)² + (35 - 36.67)² + (35 - 36.67)² + (10 - 36.67)²)/(9 - 1)

σ = √236.1139

σ = 15.37

B) For various birds;

μ = Σx/n = (218 + 106 + 97 + 56 + 66 + 39 + 55 + 32 + 54 + 20 + 25 + 25)/12

μ = 66.0833

σ = √((218 - 66.0833)² + (106 - 66.0833)² + (97 - 66.0833)² + (56 - 66.0833)² + (66 - 66.0833)² + (39 - 66.0833)² + (55 - 66.0833)² + (32 - 66.0833)² + (54 - 66.0833)² + (20 - 66.0833)² + (25 - 66.0833)² + (25 - 66.0833)²)/(12 - 1)

σ = √3035.72

σ = 55.10

C) difference in standard deviations = 55.10 - 15.37 = 39.73 miles per hour

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3 years ago

What is the circumference of the circle shown below?​

What is the circumference of the circle shown below?