Suppose that the relation S is defined as follows. S={(-9, -9), (-2, -7),(-2, 7)}
Give the domain and range of S.
Write your answers using set notation.

Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.

Is the power produced directly proportional to the wind speed, give reasons for your answer?

What is the radius of the cone in the diagram? round your answer to the nearest whole number