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11Alexandr11 [23.1K]
2 years ago
9

A circular town clock has a radius of 4 feet.

Mathematics
1 answer:
gayaneshka [121]2 years ago
8 0

Answer:

50.27 b/c pi is multiplyed by raduis^2

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1 cm equals 10 mm how many millimeters does 2.5 cm equal label your answer ​
kodGreya [7K]
Answer: 25 mm

Explanation:

Multiply 2.5 by 10 since 1=10 and there are 2.5

2.5(10)
=25
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HELP is a volunteer group that raises money each year for community services
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What about it? uhhhh
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The wheels on a car have a diameter of 28 inches. How many full
Lorico [155]

Answer:

27

Step-by-step explanation

14 is the radius so multiply by pi to get 87.96

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7 0
3 years ago
Chicken Delight claims that 87% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 or
jeka57 [31]

Answer:

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

Step-by-step explanation:

In this question we have to test an hypothesis.

The null and alternative hypothesis are:

H_0: \pi\geq0.87\\\\H_a:\pi

The significance level is assumed to be 0.01.

The sample of size n=80 gives a proportion of p=61/80=0.7625.

The standard deviation is:

\sigma=\sqrt{\frac{\pi(1-\pi)}{N} }=\sqrt{\frac{0.87*0.13}{80} }=0.0376

The statistic z is then

z=\frac{p-\pi+0.5/N}{\sigma}=\frac{0.7625-0.87+0.5/80}{0.0376} } =\frac{-10125}{0.0376} =-2.70

The P-value is

P(z

The P-value (0.003) is smaller than the significance level (0.010), so the effect is significant. The null hypothesis is rejected.

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

6 0
3 years ago
What is 83 x 96 fzoigjwcsvgfmcgksjkvzmclkm
nasty-shy [4]
7968 because you multiply the two numbers to get the final answer
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