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Alexandra [31]
3 years ago
5

The sampling method where every item in the population has an equal probability of being selected is called:

Mathematics
1 answer:
larisa86 [58]3 years ago
3 0
With 'random sampling' every item in the population has an equal probability of being selected.
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Algebra applications: find the value of x and y​
Inga [223]

Answer : The value of x and y is 8 and 10 respectively.

Step-by-step explanation :

As we known that if two parallel lines are cut by a transversal line then consecutive interior angles are supplementary.

From the given figure we conclude that:

5x-y+150=180       ...........(1)

5x-y=180-150

5x-y=30      ............(2)

5x+y+130=180       ...........(3)

5x+y=180-130

5x+y=50        ...........(4)

Now we adding equation 2 and 4, we get the value of x.

5x-y+5x+y=30+50

10x=80

x=8

Now we are putting the value of x in 4, we get the value of y.

5x+y=50

5(8)+y=50

y=50-40

y=10

Therefore, the value of x and y is 8 and 10 respectively.

3 0
3 years ago
Carson has 3 apples and eats 2. How many does he have left?
Charra [1.4K]

Answer:

3-2=1

Step-by-step explanation:

3 0
3 years ago
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A distribution for a set of wrist circumferences (measured in centimeters) taken from the right wrist of a random sample of newb
lozanna [386]

Answer:

A Histogram will be used to represent the size of right wrist of the random sample of newborn infants.

Step-by-step explanation:

A histogram is the graphical representation of the frequency distribution in the given sample. As the value of circumference can be a positive real number, therefore a Histogram with class boundaries can be formed such that the overall frequency of a wrist size is also visible in the graph.

Also as the distribution will be of continuous nature thus a histogram is a more suitable option as compared to a bar or stem and leaf graph.

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3 years ago
. Attendance at the drama play was 140% of attendance at the concert. How many people came to the drama play?
vivado [14]

This question is incomplete

Complete Question

A school held several evening activities last month—a music concert, a basketball game, a drama play, and literacy night. The music concert was attended by 250 people. How many people came to each of the other activities?

Attendance at the drama play was 140% of attendance at the concert. How many people came to the drama play?

Answer:

350 people

Step-by-step explanation:

Percentage of people that attended a drama play =

Number of people that attended the drama play/Total number of people at the concert × 100

Attendance at the drama play was 140% of attendance at the concert.

The music concert was attended by 250 people

Let the number of people that came to the drama play = x

Hence:

140% = x/250 × 100

140/100 = x/250

Cross Multiply

140 × 250 = 100 × x

x = 140 × 250/100

x = 350 people

Therefore, the number of people that came to the drama play = 350 people

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3 years ago
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