Determine the quantity present after 300 years. Round to the nearest hundredth of a gram.

Let Q represent a mass of radioactive radium (226Ra) (in grams), whose half-life

is 1599 years. The quantity of radium present after t years is

A) 0.00 g

B) 0.47 g

C) 0.88 g

D) 4.39 g

E) 5.00 g

D) 4.39 g

Mathematics

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Change the word statement to an equation. Use x as the variable.5 times a number equals 10 less than 6 times the number.

A. 5x = 10 - 6x B. 5x = 6x - 10 C. 5x = 10 - 6

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Mathematics

Use graphical methods to solve the linear programming problem.Suppose an horse feed to be mixed from soybean meal and oats must contain at least 100 lb of protein, 20 lb of fat, and 9 lb of mineral ash. Each 100-lb sack of soybean meal costs $20 and contains 50 lb of protein, 10 lb of fat, and 8 lb of mineral ash. Each 100-lb sack of oats costs $10 and contains 20 lb of protein, 5 lb of fat, and 1 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost?

2 sacks of soybeans and 0 sacks of oats