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A random sample of students was surveyed and asked to list their grade level and
whether or not they have a pet. Results are shown in the table below, but some values
are missing. Fill in the missing values.
Pets Survey
Pets No Pets Total
6th grade
30
7th grade
12
23
8th grade 19
Total
48
90

A Random Sample Of Students Was Surveyed And Asked To List Their Grade Level And Whether Or Not They Have A Pet Results Are Shown In The Table Below But Some Va class=

Sagot :

Answer:

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A random sample of students was surveyed and asked to list their grade level and whether or not they have a pet. The total number of no pets would be 42.

What is addition?

The addition is one of the mathematical operations. The addition of two numbers results in the total amount of the combined value.

A random sample of students was surveyed and asked to list their grade level and whether or not they have a pet.

The total number of pets is 48.

Let a number of a pet in 6th grade be x.

So, [tex]x + 12 + 19 = 48\\\\x = 48 -31\\\\x =17[/tex]

The number of no pets in 6th grade

17 + y = 30

y = 13

The number of no pets in 7th grade

12 + z = 23

z = 11

The total result of survey in 8th grade

30 + 23 + a = 90

a = 37

The number of no pets in 8th grade

19 + b = 37

b = 18

The total number of no pets would be 42.

Learn more about the addition rule here:

https://brainly.com/question/27496136

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