Mathematics, 20.01.2021 05:20 HyperZ

Hi plz help brainiest and 5 star 20points plz help good rating and more.

Answers: 1

Show answers

Answers

Answer from: bcaughman6885

(a) check explanation

(b) The favourite topic among the students is Number, having a total sum of 60 students who chose the topic.

(d) the fraction of boys who chose geometry as their favourite is ¹/₆

(e) the fraction of students who chose statistics that were boys is ²/₃

Step-by-step explanation:

From the given statement;

Total number of boys = 60

Total number of girls = 80

Total number of students who chose Number = 60, number of boys = 20, number of girls = 40

Total number of students who chose Algebra = 30, number of boys = ?, number of girls = ?

Total number of students who chose geometry = 20, number of boys = 10, number of girls = 10

number of boys who chose statistics = 20, number of girls = ?

let the number of boys who chose algebra = x

20 boys(number) + x boys(algebra) + 10 boys (geometry) + 20 boys (statistics) = 60

50 + x = 60

x = 60 - 50

x = 10 boys

Thus, 10 boys chose algebra, then (30 - 10) girls chose algebra, i.e 20 girls.

Let the number of girls who chose statistics = y

40 girls(number) + 20 girls(algebra) + 10 girls(geometry) + y girls (statistics) = 80

70 + y = 80

y = 80 - 70

y = 10 girls

Thus, 10 girls chose statistics

Now complete the two-way table as follows;

(a) Two-way table

Boys Girls Total

Algebra 10 20 30

Geometry 10 10 20

Number 20 40 60

Statistics 20 10 30

Total 60 80 140

(b) The favourite topic among the students is Number, having a total sum of 60 students who chose the topic.

$= \frac{number \ of \ girls \ who \ chose \ statistics }{Total \ number \ of \ girls} \\\\= \frac{10}{80} \\\\= \frac{1}{8}$

(d) the fraction of boys who chose geometry as their favourite;

$= \frac{number \ of \ boys \ who \ chose \ geometry }{Total \ number \ of \ boys} \\\\= \frac{10}{60} \\\\= \frac{1}{6}$

(e) the fraction of students who chose statistics that were boys is calculated as;

$= \frac{number \ of \ boys \ who \ chose \ statistics }{Total \ number \ of \ students \ who \ chose \ statistics} \\\\= \frac{20}{30} \\\\= \frac{2}{3}$

Answer from: Quest

step-by-step explanation:

Answer from: Quest

Ithink the right answer could be 50%

Another question on Mathematics

Mathematics, 21.06.2019 17:00

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Answers: 1

Answer

Mathematics, 21.06.2019 23:00

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain

Answers: 2

Answer

Mathematics, 21.06.2019 23:00

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

Answers: 1

Answer

Mathematics, 21.06.2019 23:40

What is the slope of (0,32) and (100,212)

Answers: 2

Answer

You know the right answer?

Hi plz help brainiest and 5 star 20points plz help good rating and more.
...