In a survey , it was found that 80%people like orange 85% like mango and 75% liked both. but 45 people liked none of them. and find total no of people in the survey ​

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Find the area of an equilateral triangle with a side of 6 inches