Ava has 0.5 kg of salt. she prepares 18 meals for guests at a restaurant. she uses 5 grams spoon and puts 2 spoonfuls of salt in each meal. how many grams of salt will be left over after all 18 meals are prepared?

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An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

What is the measure of each of the two angles formed by the bisector of the diagonal of a rhombus if the original angle measures 58 degrees?