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tia_tia [17]
3 years ago
13

PLEASE HELP NO ONE IS ANSWERING ANY QUESTION I ASK!!!!

Mathematics
1 answer:
Xelga [282]3 years ago
5 0

Answer:

sorry in dont know the ans

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Juan is making t-shirts to sell at a concert.
o-na [289]

Answer:

7 shirts

Step-by-step explanation:

The function for producing shirts is

f($) = 50 + 7.5(x), where x is the number of shirt

The function for selling shirts is

f($) = 15(x)

For there to be a profit, he must make more money selling the shirts than he spent on making the shirts

Therefore, 15(x) > 50 + 7.5(x)

15x > 50 + 7.5x

15x - 7.5x > 50

7.5x > 50

x > 6.67 shirts

To make a profit, Juan must sell at least 7 shirts

7 0
2 years ago
On a certain hot​ summer's day, 325 people used the public swimming pool. The daily prices are $1.50 for children and $2.50 for
ZanzabumX [31]

Answer:

217 children and 481-217 = 264 adults

Step-by-step explanation:

7 0
3 years ago
Is a survey of the guests about their preference of food at a party an observational study or experimental study? If it is an ex
Andreas93 [3]

Answer:

The study is an observational study.

Step-by-step explanation:

Observational study: In research methods, the term "observational study" is determined as one of the different studies that are being conducted by the researchers to observe or study the effects of a specific risk factor, treatment, diagnostic test, or some other intervention in the absence of an effort to change which participants are being exposed and which is not being exposed to it.

Types: Cohort study and case-control study.

In the question above, the given statement represents the observational study.

6 0
3 years ago
To determine the number of trout in a​ lake, a conservationist catches 180 ​trout, tags them and throws them back into the lake.
GaryK [48]
The ratio of the trout with tags that are caught and the total trout with tags is first calculated.

     r = 12 trout / 180 trout = 1/15

Then, we divide the number of trouts caught without tag by the value obtained above.

     N = (48 - 12) / (1/15) = 540

Then, we add the number obtained above and 180.
     T = 540 + 180 = 720

ANSWER: 720
3 0
3 years ago
People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a fam
Lady_Fox [76]

Answer:

23 gallons of water

Step-by-step explanation:

People use water to​ cook, clean, and drink every day. An estimate of 33.9​% of the water used each day is for cooking. If a family uses 67.8 gallons of water a day for cooking​, how many gallons do they use every​ day?

This is calculated as:

33.9 % × 67.8 gallons of water

= 0.339 × 67.8 gallons of water

= 22.9842 gallons of water

Approximately = 23 gallons of water

Therefore, 23 gallons of water are used everyday for cooking

5 0
2 years ago
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