What are the safety rules for using mains electricity?
list 3 simultaneous equations let x be price of blankets, y be cots, and z be lanterns 25x+10y+5z1375 5x+20y+5z1825 15x+30y+25z3725 there are so many ways of doing this. every equation can be divided by 5.do that 5x+2y+z275 x+4y+5z365 3x+6y+5z745 then use the second equation minus the first equationit will give y45-2x sub y into the second equation.it will give z185-7x sub z and y into the third equation.it will give x15, then use x to find y and z final answer is x15 y75 z50
Detectors were created for the purpose to detect. Anything you can think of that would be important to detect will exist. Food, drugs, bacteria, metal, organism, you. Anything can be detected, mostly because everything is related to electricity.
carbon monoxide detectors, heat detectors, radiation detectors
