In the parallelogram below what is X=?

Ihave trouble finding the nth term of a linear sequence

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)

The area of a circle is equal to 1 dm². find the radius of the circle.