Gregory watches TV for an average of 90 minutes per day on weekdays and an average of 135 minutes per day on the weekends. What is the ratio of the average number of minutes he watches TV on weekdays to minutes he watches TV on weekends?

2:3

Step-by-step explanation:

minutes per day on weekdays:minutes per day on weekends

90:135

It can be written in simplier form, because both numbers can be divided by 45

90÷2=45 and 135÷45=3

The ratio is 2:3.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.