contestada

Monique randomly surveyed 30 students from
her class and found that 18 had a dog or a cat for a
pet. If there are 870 students in Monique's school,
predict the total number of students with a dog or a
cat.

Respuesta :

capsasha2

Answer:

522

Step-by-step explanation:

Find the percent of students in her class that have a dog or cat:

  1. Set up a proportion: [tex]\frac{18}{30} = \frac{x}{100}[/tex]  
  2. Cross multiply, then divide: 18 × 100 = 1800, 1800 ÷ 30 = 60
  3. So, 60% have a dog or cat

Find 60% of the total amount of students in Monique's school:

  1. 60% of 870 = [tex]\frac{60}{100}[/tex] × [tex]\frac{870}{1}[/tex]  
  2. [tex]\frac{60}{100}[/tex] × [tex]\frac{870}{1} = \frac{52200}{100}[/tex]  
  3. [tex]\frac{52200}{100} = \frac{522}{1} = 522[/tex]  

I hope this helps!