Find n when the sum of the first n integers is 465, showing your work

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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)

Askateboard ramp is in the shape of a right triangle what is the height of the ramp