What are the explicit and recursive formulas for the sequence 540, 180, 60, 20, ...?

What is the measure of the smallest angle in the diagram? 15 29 32 45

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points