The chart below shows the distribution of weeds in yard

were is the chart?

step-by-step explanation:

C: Yes, it is representative because each type of book was represented in the approximate proportion that exists in the library.

12,950

Step-by-step explanation:

drama: 23%

other: 27%

comedy: 20%

23% + 27% + 20% = 70%

70% of 18,500 =

= 0.7 * 18,500

= 12,950

12950

Step-by-step explanation:

comedy : 20% => 20 × 18500 ÷ 100 = 3700

drama : 23% => 23 × 18500 ÷ 100 = 4255

other : 27% => 27 × 18500 ÷ 100 = 4995

all together: (20 + 23 + 27) × 18500 ÷ 100 = 3700+4255+4995 = 12950

4255 students choose Drama

4995 students choose Other

3700 students choose Comedy

Step-by-step explanation:

18500 x _% =

Ex: 18500 x 23% = 4255.

43,000 Citizens

Step-by-step explanation:

Data

Hamster    8%

Fish          12%

Dogs  23%

Sum        43%

The total population is 100,000 citizens. To find the number of citizens for each pet obtain the percentage of 100,000:

Citizens who chose hamsters are  8% of 100,000

100,000*8/100=8,000

Citizens who chose fish are  12% of 100,000

100,000*12/100=12,000

Citizens who chose dogs are  23% of 100,000

100,000*23/100=23,000

Citizens who choose hamsters, fish or dogs, is the sum of these three results

8,000+12,000+23,000=43,000

B. The potential energy decreases while the kinetic energy increases.

Explanation:

Potential Energy (PE) = mgh  

where m -mass of object

g- acceleration due to gravity,

But mg is constant, hence the only variable that is changing is the height, and it is directly proportional to the potential energy. This means at the maximum height we have the greatest potential energy. This means that at its highest point, the pendulum possesses maximum potential energy hence as it moves to the lowest point potential energy decreases.

Kinetic energy is given by

Where m is is the mass of the object and v its velocity.

The equation shows that Kinetic energy is directly proportional to the square of velocity. This means kinetic energy is greatest when we have maximum velocity. At its lowest point the pendulum moves with maximum velocity therefore from the highest point to the lowest point velocity is increasing which means kinetic energy is also increasing.

B

Explanation:

C: Yes, it is representative because each type of book was represented in the approximate proportion that exists in the library.

Step-by-step explanation:

Given is a chart, showing the distribution of the number of books in a library.

Also given that Sahira chooses a random sample from the library and records the type of books in the chart below.

Sahira's sample can be said to be representative because given that books are taken at random.  So just because literacy books were more we cannot say it is not representative  II option is not right, because each book was not chosen uniquely, just random books were drawn

Last option c is right, because each book selected represents the sample from population of full library books.