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Anuta_ua [19.1K]
3 years ago
15

Survey: On free time 90 students like watching TV, 20 like watching TV but not reading, 80 like reading, 40 do not like watching

TV. Question: Percent of total student like both watching televisan and reading
Mathematics
1 answer:
Dvinal [7]3 years ago
5 0

Answer:

 50 %

Step-by-step explanation:

From the diagram attached,

Percentage of total students that like watching television = [(WnR)/μ]×100......... Equation 1

The number of students that like watching television and reading (WnR) = 70

The total number of students (μ) = 40+20+70+10

The total number of students (μ) = 140

Substitute these values into equation 1

Percentage of total students that like watching television = (70/140)×100

Percentage of total students that like watching television = 1/2(100)

Percentage of total students that like watching television = 50 %

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Taylor is twice as old as jessi if you add their ages together you get 27 hold old are Taylor and jessi
deff fn [24]

Answer: Taylor is 14 and Jessi is 13

Step-by-step explanation:

Since you can't divide 27 by 2, you would most likely break it in half. SInce the question states that Taylor is still older, she would be 14, and Jessi 13.

6 0
2 years ago
at the northgate fabric store, there are 5 scrap pieces of cloth. their lengths are 1/2 yrd, 3/10 tard, 5/6 yard, 1/3 yard, and
9966 [12]
Answer: 71/30 or 2 and 11/30 yards

Work:
You need to add each fraction together in order to find the total amount of fabric. You should do this by finding common denominators (the number on the bottom of the fraction) and then combining fractions. 
Since the order of adding doesn't matter, you should combine the fractions that are the easiest first. Start with adding 1/2 and 1/3. The common denominator is 6, since that is the LCM of 2 and 3. The fractions then become 3/6 and 2/6 which combine into 5/6. It is then easy to add the other 5/6 of a yard from the question to the 5/6 you have just found into 10/6. 
Then come over to the 3/10 and 2/5 yard pieces which can be easily added together using 10 as the common denominator. These two fractions added together become 7/10.
The final step is to add the 7/10 plus the 10/6. The common denominator is 30, as it is the LCM of 10 and 6. The new fractions become 21/30 plus 50/30 which equals 71/30. 
5 0
3 years ago
The intersection of any two disjoint sets is a null set. Justify your answer.​
Ne4ueva [31]

Answer:

Yes The intersection of any two disjoint sets is a null set

if two sets do not have any common element  then their intersection does not have any element Therefore its intersection is a null set

Step-by-step explanation:

8 0
3 years ago
Determined that intercepts of the line.
hjlf

Answer:

y    0.4

x    0.3

Step-by-step explanation:

8 0
2 years ago
There are 21 female performers in a dance recital. The ratio of men to women is 4:7. How many men are in the dance recital?
pantera1 [17]

Answer:

12

Step-by-step explanation:

let x be the number of men

4:7 = x:21

4/7 = x/21

7x = 84

x = 12

6 0
3 years ago
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