During the summer in Phoenix, a central air conditioner in a house uses 1.7 kilowatt/hour for 18 hours. If electricity costs $0.10 per kilowatt-hour, how much does it cost (in dollars, to the penny) to cool the house? Use exact numbers; do not estimate. g

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Use sigma notation to represent the following series for 9 terms.

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.