zarakhan
zarakhan zarakhan
  • 26-02-2020
  • Mathematics
contestada

Please help and first right answer will be marked branliest

Please help and first right answer will be marked branliest class=

Respuesta :

ridxee
ridxee ridxee
  • 26-02-2020

Answer:

a) 320 students

b) 25 students

Step-by-step explanation:

Number of 18-years old in the survey:

(We add all  frequency points for each line)

0 + 30 + 20 + 60 + 70 + 40 + 60 + 40 + 0 = 320 students

Number of 18 year old spending between 25 and 35 minutes: 40 + 65 = 105

Number of 12 year old spending between 25 and 35 minutes: 30 + 50 = 80

105 - 80 = 25 students

Answer Link

Otras preguntas

11. He took up tennis seriously as..... sport last month. * .​
In your opinion in what ways does art enrich life?
The perimeter of a rectangle can be found using the formula P = 4 s . True or False
Find tan A of a RIGHT TRIANGLE with side lengths b = 8 and c = 12
where did they start water conservation in tamil nadu . short answer
Order the integers from least to greastest 5,-6,12,-1,-7,0,8
Read the excerpt from "Sinners in the Hands of an Angry God."You will know certainly that you must wear out long ages, millions of millions of ages, in wrestlin
which of the following would be addressed by an employer completing an EAP template?
what are the causes of world war 2 ?
In a research experiment, ________ is an issue when the researcher has assured subjects that the collected data are only accessible to people with permission, g