Are the two triangle below similar

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

How can you tell when x and y are not directly proportional?