Answer:
58 students
Step-by-step explanation:
Given






Required
Students that take only 1 subjects
The attached image illustrates the question.
For French only (x), we have:


Collect like terms


For Geometry only (y), we have:


Collect like terms


For History only (z), we have:


Collect like terms


Students with one subject is then calculated as:



Answer:
80°
Step-by-step explanation:
Just multiply 40° by 2 to get the arc
The answer is D :) II hope that this helps and if you need a bigger description I can help
Answer:
3
Step-by-step explanation:
find value at 12 =12
find value at 10 = 6
so it changes + 6 for a change from 10 to 12
6/2 = 3