This is from my algebra, is x/2 equal to -2x

Find the value of the variable and the length of each chord for #5 and #6.

You use technology ans find a sum of 6.712e-8. write this sum in standard form

The john nash mall used 17,4000 kilowatt hours in may, with a peak load of 92 kilowatts. the demand charge is $5.95 per kilowatt, and the energy charge is $0.08 per kilowatt hour. the fuel adjustment charge is $0.017 per kilowatt hour. what is the total electricity cost for may?