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vlabodo [156]
3 years ago
14

the bathroom shower in celia's house uses 7 gallons of water per minute. if Celia installs a water saving device,the shower will

use only 2 1/2 gallons of water per minute. how many gallons of water will Celia save during a 12-minute shower after the water-saving device is installed
Mathematics
1 answer:
Svet_ta [14]3 years ago
8 0
She saves 54 gallons.
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Jeremy ate 5 pieces of shrimp, Julie ate 7 pieces. What fraction of the total did Jeremy eat?
matrenka [14]

Answer:

\frac{5}{12}

Step-by-step explanation:

The total amount of shrimp that was eaten was 12 pieces of shrimp.

To make the fraction you will simply put the amount of shrimp Jeremy ate over the total number of shrimp eaten by the pair.

Therefore, the fraction would look like this:

\frac{5}{12}

The decimal form of this would be 0.4167. Which also means that Jeremy ate 41.67% of the total amount of shrimp eaten.

Hope this helps!!

4 0
2 years ago
A travelling salesman sells milkshake mixing machines and on average sells 8.9 machines per month. He needs to sell at least 3 m
Goshia [24]

Answer:

0.67% probability he will have to shut down after this month

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given time interval.

On average sells 8.9 machines per month.

So \mu = 8.9

Using the Poisson distribution, what is the probability he will have to shut down after this month

If he sells less than 3 machines.

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2)

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 0) = \frac{e^{-8.9}*8.9^{0}}{(0)!} = 0.0001

P(X = 1) = \frac{e^{-8.9}*8.9^{1}}{(1)!} = 0.0012

P(X = 2) = \frac{e^{-8.9}*8.9^{2}}{(2)!} = 0.0054

P(X < 3) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0001 + 0.0012 + 0.0054 = 0.0067

0.67% probability he will have to shut down after this month

5 0
2 years ago
Quick math problem. Thanks if you help :)
user100 [1]
3 to the power of 9 over 10
4 0
3 years ago
Read 2 more answers
PLEASE PLEASE PLEASE HELP!!
Lapatulllka [165]
What's the problem?
I don't see it
3 0
3 years ago
Read 2 more answers
WILL GIVE A BRAINLEST FOR RIGHT ANSWER !!!
svlad2 [7]

Answer: Cluster sampling

Step-by-step explanation:

Cluster sampling is a type of sampling method . With cluster sampling, the observer splits the population into separate groups which are called as called clusters. After dividing the whole populations into clusters he select a simple random sample of clusters from the population. The observer conducts his analysis on data from the sampled clusters.

From the given statement we can see that the automobile is doing his analysis by selecting  three stores from each state (cluster) in the country  and surveys all customers present in the store in a certain week.

Hence, he used cluster sampling .

4 0
2 years ago
Read 2 more answers
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