coal used in a factory is an example of
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Two times a number Y decreased by 1 is 4
1 point 2y-1=4 , 2y-4=1 , 2y=-1+4 ,2y=4.
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Many industries use coal to manufacture certain products. Some of the popular industries which make use of coal are the cement industry, paper and aluminium industry, chemical and pharma industry amongst others. Coal provides numerous raw materials like benozle, coal tar, sulphate of ammonia, creosote, etc. to chemical industries. Coal is mostly used as a source of energy is most of the industries.
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