Find the first four terms of the sequence given by the following.
=an=·−1+n1n2 , n, 1, 2,

Which matrix multiplication is possible?

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)

If bradley saves for 4 weeks, what is the total amount of money he will have saved?