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3 years ago

What effect does blocking by gender have on the standard deviation of recumbent length for each gender?

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

The standard deviation is lower for each group than it is for the groups combined.

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A fountain is made up of two semicircles and a quarter circle. Find the perimeter of the fountain. Round your answer to the near

slamgirl [31]

complete question:

A fountain is made up of two semicircles and a quarter circle. The diameter of the semicircles is 10 ft. Find the perimeter of the fountain. Round your answer to the nearest tenth. The picture is represented below.

Answer:

The perimeter of the fountain = 47.1 ft

Step-by-step explanation:

The fountain has 2 semi circle from a smaller circle with the diameter represented as 10 ft and a quarter circle from a bigger circle with the radius equals to 10 ft.

The perimeter is the distance around the fountain.The perimeter is the circumference in circular perspective. Therefore,

perimeter for a full circle = 2πr

Half circle = 2πr/2 = πr

For 2 half circle = πr + πr = 2πr

For 2 half circle = 2πr

r = 10/2 = 5

perimeter for 2 half circle = 2 × 5 × 3.14 = 31.4 ft

Perimeter for the quarter circle

r = 10 ft

Quarter circle perimeter = 1/4 × 2πr = πr/2

Quarter circle perimeter = (3.14 × 10)/2

Quarter circle perimeter = (31.4)/2

Quarter circle perimeter = 15.7 ft

The perimeter of the fountain = 15.7 ft + 31.4 ft = 47.1 ft

4 0

4 years ago

WHOEVER GETS RIGHT GETS BRAINLIEST!!

ozzi

Answer:

Answer B: min. value at -6

Step-by-step explanation:

Complete the square of f(x) = x^2 - 2x - 5.

Note: Please use " ^ " to denote exponentiation, as shown.

Start with f(x) = x^2 - 2x - 5.

Identify the coefficient of the x term: it is 2.

Take half of that and square your result: (1/2)(2) = 1, and then 1^2 = 1.

Add and subtract this 1 between the 2x term and the constant term:

f(x) = x^2 - 2x + 1 - 1 - 5

Rewrite x^2 - 2x + 1 as a perfect square:

f(x) = (x - 1)^2 - 1 - 5, or f(x) = (x - 1)^2 - 6

Compare this to the standard form

f(x) = (x - h)^2 + k

We see that h = 1 and k = -6.

The vertex is located at (h, k); here, it's located at (1, -6).

Thus, the minimum value of this function is at the vertex (1, -6).

This agrees with Answer B: min. value at -6.

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3 years ago

Natalie drives from her home to the art museum. She knows that when she passes the fire station,

scoundrel [369]

Answer:

is it maryann or natalie lol

Step-by-step explanation:

7 0

3 years ago

Does anyone know how to do 7a?

Olegator [25]

Calculate the circumference of the two semi circles, which equals a full circle. Then add the two sides of the track.
Circumference is pi x diameter = 3.14 x 22.8 = 71.592, so, you would need to add 71.592 + 49.2 + 49.2 = 169.992 meters, and that would be the length of one lap of the track.

8 0

3 years ago

Write the pair of fractions as a pair of fractions with a common denominator.

galben [10]

Answer:

3/10 and 4/10 4/12 and 9/12

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

What effect does blocking by gender have on the standard deviation of recumbent length for each​ gender?

What effect does blocking by gender have on the standard deviation of recumbent length for each gender?