What is the common difference between the elements of the arithmetic sequence below?
–18, –22.5, –27, –31.5, –36

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the