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tester [92]
3 years ago
7

The area of a piece of pie in the shape of a sector is 7.1 in^2. The angle of the sector is 40°. Round your answers to the neare

st tenth if necessary.
What is the area of the entire pie?

The area of the entire pie is _____ in^2.

What is the diameter of the pie?

The diameter of the pie is d ≈ _____ in.
Mathematics
1 answer:
irinina [24]3 years ago
8 0

Answer:

Step-by-step explanation:

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Noah Beck starred as Dixie D'Amelio's love interest in her "Be Happy" music video.
Montano1993 [528]

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Each hat cost $9. Each scarf cost $4 less than each hat. What is the total for 7 hats and 9 scarves? Write a number sentence for
Sladkaya [172]
9xh = total cost of the hat 
9 per hat - 4 = $5 each scarf

h = hat 
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(9xh) + (5x s)
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3 years ago
Read 2 more answers
The tip percentage at a restaurant has a mean value of 18% and a standard deviation of 6%.
irakobra [83]

Answer:

a. 0.8366

b. No

Step-by-step explanation:

We will use the central limit theorem which can be applied to a random sample from any distribution as long as the mean and the variance are both finite and the sample size is large (the sample size n should be greater than 30). Here we have that the tip percentage at the restaurant has a mean value of 18% and a standard deviation of 6%, then because of the central limit theorem, we know that the sample mean tip percentage is approximately normally distributed with mean 18% and standard deviation 6/\sqrt{40}%=0.9487%.

a. The z-score related to 16% is given by (16-18)/0.9487 = -2.1081 and the z-score related to 19% is given by (19-18)/0.9487 = 1.0541. We are looking for P(16 < \bar{X} < 19) = P(-2.1081 < Z < 1.0541) = P(Z < 1.0541)- P(Z < -2.1081) = 0.8540 - 0.0175 = 0.8366

b. If the sample size had been 15 rather than 40, then, the probability requested in part (a) could not be calculated from the given information, this because the central limit theorem only applies when the sample size is large, for example n > 30.

8 0
3 years ago
Abby is adopting kittens from the pet store. if there are 18 kittens, how many ways can she choose 2 kittens?​
Bas_tet [7]

Answer:

I believe 9

Step-by-step explanation:

18/2=9 i think this is your answer

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A manufacturer wants to produce a 4"× 2"× 5" rectangular box to hold teabags using the net shown.
Margarita [4]

Answer:

40

mark me brainlist ok ôókk

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