An engineer creates a solid steel for an engine. The part has a volume of 1450 cm3. Steel can be purchased for $0.35 per kg, and has a density of 7.95g/cm3 . If the engineer makes 350 of these parts, what is the cost of the steel to the nearest dollar

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?