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Zina [86]
3 years ago
14

What is the circumference of a circle that has a diameter of 9 in?

Mathematics
2 answers:
postnew [5]3 years ago
8 0

Answer:

The circumference is 28.27in.

liq [111]3 years ago
3 0

The circumference of the circle is 28.26 in.

Step-by-step explanation:

Given,

The diameter of a circle = 9 in

Radius of the circle (r) = 4.5 in

To find the circumference of the circle.

Formula

The circumference of the circle of radius r = 2πr

Now,

The circumference of the circle = 2×3.14×4.5 in [ taking π = 3.14]

= 28.26 in

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Answer:

12.5%

Step-by-step explanation:

2.56-2.24 =0.32

By using the rule of three we can find the answer.

we have that 2.56 = 100% so we have to find what percentage 0.32 represents

(0.32*100)/2.56 = 12.5

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Rotation on +90°/-270°

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Step-by-step explanation:

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Assume that a hypothesis test of the given claim will be conducted. Identify the type I or type II error for the test. A consume
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Answer:

Type I error: Concluding that mean mileage is less than 32 miles per hour when actually it is greater than or equal to 32 miles per gallon.

Step-by-step explanation:

We are given the following in the question:

Hypothesis:

Mean mileage for the Carter Motor​ Company's new sedan

We can design the null hypothesis and alternate hypothesis as:

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Type I error:

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Type II error:

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Thus, type I error for the given hypothesis is concluding that mean mileage is less than 32 miles per hour when actually it is greater than or equal to 32 miles per gallon.

Type II error would be concluding that mean mileage is greater than or equal to 32 miles per gallon when actually it is less than 32 miles per gallon.

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