You and a friend buy two fruit smoothies and leave a tip. you split the total and your half comes to $3.60. what percent tip (in decimal form) did you and your friend leave if the fruit smoothies cost $3 each?

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

This is about circle theorems. someone asap : (

A+b= 17, ab=70, find the value of |a-b|