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aleksley [76]
2 years ago
12

During its grand opening sale, a local electronics store gave customers a chance to win a new flat screen TV. Customers only had

to fill out a card with their name, address, and telephone number and drop it into a box. One winner would be chosen at random. This is an example of a
Mathematics
1 answer:
Gennadij [26K]2 years ago
8 0

Using sampling concepts, it is found that this is an example of a random sample.

<h3>How are samples classified?</h3>

Samples may be classified as:

  • Convenient: Drawn from a conveniently available pool.
  • Random: All the options into a hat and drawn some of them.
  • Systematic: Every kth element is taken.
  • Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
  • Stratified: Also divides the population into groups. Then, a equal proportion of each group is surveyed.

In this problem, one winner is chosen at random from all the participants, hence random sampling is used.

More can be learned about sampling concepts at brainly.com/question/25122507

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A florist can make a grand arrangement in 18 minutes or a simple arrangement in 10 minutes. The florist makes at least twice as
Colt1911 [192]

Answer:

See explanation

Step-by-step explanation:

Let x be the number of simple arrangements and y be the number of grand arrangements.

1. The florist makes at least twice as many of the simple arrangements as the grand arrangements, so

x\ge 2y

2. A florist can make a grand arrangement in 18 minutes =\dfrac{3}{10} hour, then he can make y arrangements in \dfrac{3}{10}y hours.

A florist can make  a simple arrangement in 10 minutes =\dfrac{1}{6} hour, so he can make x arrangements in \dfrac{1}{6}x hours.

The florist can work only 40 hours per week, then

\dfrac{3}{10}y+\dfrac{1}{6}x\le 40

3. The profit on the simple arrangement is $10, then the profit on x simple arrangements is $10x.

The profit on the grand arrangement is $25, then the profit on y grand arrangements is $25y.

Total profit: $(10x+25y)

Plot first two inequalities and find the point where the profit is maximum. This point is point of intersection of lines x=2y and \dfrac{3}{10}y+\dfrac{1}{6}x=40

But this point has not integer coordinates. The nearest point with two integer coordinates is (126,63), then the maximum profit is

\$(10\cdot 126+25\cdot 63)=\$2,835

8 0
3 years ago
6x + y &gt; -3 and 2x + y ≤ 4
Sergeu [11.5K]
X greater than negative 1 over 6y plus negative 1 over 2
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3 years ago
Anthony is painting his living room. He purchased 5 gallons of paint. Each gallon
Rainbow [258]

Answer

382.1

Step-by-step explanation:

its 5 times 76.42ft2.

plz mark as brainliest btw

4 0
3 years ago
HELP ME ASAP PLEASE<br><br> will give brainliest
Talja [164]

Step-by-step explanation:

A) opposite sides in a rectangle is always equal

B) 9x+12 = 4x +47

Transpose = 9x - 4x = 47 - 12

solve = 5x = 35

Divide both sides by 5

x = 7

5 0
3 years ago
Read 2 more answers
How is the number 123,789 written in words?
Leokris [45]
One hundred twenty three thousand seven hundred eighty nine
3 0
4 years ago
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