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STALIN [3.7K]
2 years ago
14

The largest jaw breaker in a store is spherical with a radius of 2 in, and sells for $4.00. A

Mathematics
1 answer:
maw [93]2 years ago
5 0

Answer:

$36

Step-by-step explanation:

1. Determine the surface area of the  largest jaw breaker

Surface area of a sphere = 4πr²

4 x 3.14 x 2² = 50.24in²

2. Determine the surface area of the new jaw breaker

4 x 3.14 x 6² = 452.16 in²

3. Determine the cost per area

4/ 50.24

4. Determine the price for the new jaw breaker

4/ 50.24 x 452.16 = $36

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A stack of round crackers are in the shape of an oblique cylinder. The diameter of each cracker is 6 centimeters and the height
tekilochka [14]

Answer: 294cm

Step-by-step explanation:

The volume of a oblique cylinder is given by:

Volume= πr^2h

where

π = 3.14

r = radius

h = height

Radius= diameter/2 = 6/2 = 3

We have all the values, so we put it in the formulae so we can get the answer.

Volume= πr^2h

= 3.14 × 3 × 3 × (0.4 × 26)

= 294cm

8 0
3 years ago
Which pair of undefined terms is used to define a ray?
IgorLugansk [536]

Answer:

point and line

Step-by-step explanation:

3 0
3 years ago
Suppose that one-way commute times in a particular city are normally distributed with a mean of 15.43 minutes and a standard dev
vovikov84 [41]

Answer:

Yes, a commute time between 10 and 11.8 minutes would be unusual.

Step-by-step explanation:

A probability is said to be unusual if it is lower than 5% of higher than 95%.

We use the normal probability distribution to solve this question.

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 15.43, \sigma = 2.142

Would it be unusual for a commute time to be between 10 and 11.8 minutes?

The first step to solve this problem is finding the probability that the commute time is between 10 and 11.8 minutes. This is the pvalue of Z when X = 11.8 subtracted by the pvalue of Z when X = 10. So

X = 11.8

Z = \frac{X - \mu}{\sigma}

Z = \frac{11.8 - 15.43}{2.142}

Z = -1.69

Z = -1.69 has a pvalue of 0.0455

X = 10

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 15.43}{2.142}

Z = -2.54

Z = -2.54 has a pvalue of 0.0055

So there is a 0.0455 - 0.0055 = 0.04 = 4% probability that the commute time is between 10 and 11.8 minutes.

This probability is lower than 4%, which means that yes, it would be unusual for a commute time to be between 10 and 11.8 minutes.

7 0
2 years ago
Please Help me! Choose an answer<br> Thanks
earnstyle [38]

Answer:

C.

Step-by-step explanation:

The change rate is just to big to differ from 2-4 and M isnt the same rate as P in the problem, so the answer would be C. (hoped this helped :D

5 0
3 years ago
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The sum of three consecutive odd numbers is 57. Find the product of the numbers. ​
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Answer:

17, 19, 21. Hope this helps.

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