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aliina [53]
3 years ago
13

Which operations is the following set closed under {...,-3,-2,1,3,...}

Mathematics
1 answer:
ch4aika [34]3 years ago
6 0
Addition should be the answer to your question
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Find the volume of the composite solid. Write your answer as a decimal.
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3 years ago
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She paid 26.35 for something that would usually be 31 dollars. what percent discount did she get
Alex17521 [72]

<u>Answer:</u>

She paid 26.35 for something that would usually be 31 dollars. The percentage discount she got is 15%

<u>Solution:</u>

A lady paid $26.35 for something that is usually $31, so she got a discount for the product.

Now, we have been asked to find out how much percentage discount she got.

To do that we first have to check how many dollars she got off the product.

To do so we have to subtract the discounted price from the initial price.

Therefore we get:

31 - 26.35 = 4.65

To find the percentage discount we need to do the following

\begin{array}{l}{=\frac{4.65}{31} \times 100} \\\\ {=0.15 \times 100 = 15}\end{array}

Therefore she got a discount of 15%

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3 years ago
For the function f(x)=x2-4, fins the value of f(x) when x=6
Snowcat [4.5K]

Answer:

32

Step-by-step explanation:

Substitute x = 6 into f(x), that is

f(6) = 6² - 4 = 36 - 4 = 32

5 0
4 years ago
______To test the efficacy of vitamin C in preventing colds, army recruits are randomly assigned to one of two groups: one in wh
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Answer:

This type of study design is

Clinical Trial

Step-by-step explanation:

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  • It is not a cross-sectional study because this type of study is used to analyze characteristic of the population depending upon data but this study is not used for disease.
  • It is also not a case-control study as well as prospective cohort study because case-control study is used to observe the new cases of a disease while prospective cohort study is used for determining risks or exposure factors of a disease.
  • It is not a community trial as in which a community is under observation like a city or a country and it is also not a historical prospective cohort study because in this study type, we observe the cohorts (similar objects) with the different qualities. They are studied on the basis of these qualities.
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3(x+5)=15<br> A.3<br> B.0<br> C.1/3
Blizzard [7]

Answer:

x=0

Step-by-step explanation:

letter B

5 0
3 years ago
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