What is the value of a3 in the sequence? -4, -2, - 1/2, -1/4

-4
-3

-1/2

-1/4

Tell whatever the ordered pair is a solution of the given system.

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)

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?