Find the common ratio of the geometric sequence: 1/18, 1/3, 2, 12, 72, 432, 6 9 12 1/9

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

What is the radical expression that is equivalent to the expression 27 1 over 5?