6 ft wide bird bath how many perches can be placed on it keeping 3 ft between the perches

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?