Give an example of tangents in the real world that have not been presented in this lesson. Explain how you know the tangent and the radius in your example are perpendicular.

I'll give you three examples of tangents in the real world:

Step-by-step explanation:

Remember a tangent is a straight line that touches a curve in a point, by this reason, you can search examples where there are curves (like the snowy mountain, car wheel and the deodorant type roll on in the answer), touched by a beeline (ski, street, and armpit) in just a point, in the same form, you can use as an example a ball on a soccer field and others. I don't know what examples gave you in the lesson but I'm sure at least one of the examples I give you must function.

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.