Find the common difference in the arithmetic sequence, an, in which a1 = 16 and a9 = 36. [Show all work.]

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)

Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work