White, yellow and red.
x^2 + 10x + 9 = (x + 9)(x + 1)
It is 9ct which is the grading of the Gold. 9 Karat Gold is 9/24ths Gold or 37.5% Gold. Ct or Carat is only used in reference to Gemstones.
pure gold is 24, so 9 carat means 9/24 of the material is gold
pure gold is 24, so 9 carat means 9/24 of the material is gold
9 carat gold is only 33% Gold and 66% copper. Pure Silver is soft... To answer the question - the 9 carat Gold is harder than the Silver.
Pure Gold is 24 Karat. Gold with less Karats is usually a mix of Gold & Copper. 9 Karatgold would be 9/24 = .375 pure Gold (37.5 %) and .625 (62.5%) Copper.
Gold.
9 carat gold is a low quality gold. Fourteen and twenty four carat gold is the most commonly used quality in jewelry.
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You Eat What You Kill - 2013 True Colors 1-9 was released on: USA: 9 September 2013
Pure gold is 24 karat. Find today's value of gold (it changes every day) per gram. Divide that price by 24, then multiply by 9. Your gold is 9/24ths pure gold.
gold=12 silver=9 bronze=9