the arithmetic mean is 12 and the number of observations are 20 then the sum of all of the values id A.) 8 B.) 1667 C.) 32 D.) 240

Find the cost per ounce of a gold alloy made from 10 oz of pure gold that costs $1290 per ounce and 60 oz of an alloy that costs $930 per ounce. (Round your answer to the nearest cent.)

Brand A cereal contains 10 cups of cereal. How many more cups of cereal are in Brand B cereal? 30% more cereal

Find a parametric representation of the solution set of the linear equation. (Enter your answer as a comma-separated list of equations. Use s and t as your parameters.) x + y + z = 8

Which set of numbers is in the solution set for this inequality? 3x > 15 A) {3, 4, 5, 6} B) {4, 5, 6, 7} C) {5, 6, 7, 8} D) {6, 7, 8, 9}

Can U Guys Solve This For Me? x-y+6 x=6 y=1

What's 12 rounded to the whole number

A bag has 4 yellow marbles and 16 blue marbles. half of the blue marbles are made of plastic. a marble is selected at random from the bag. what is the probability that it is a blue, plastic marble?

How does the volume of a prism change if each dimension of the present is doubled

In 2010, Car A was the highest mileage car available in a country. It's estimated highway mileage was 4 miles per gallon more than car B. if the two cars could travel a total of 90 miles on a gallon of gasoline, find the mileage of each car.

Person A buys 12 granola bars and 7 cups of yogurt for $15.50. Person B buys 6 granola bars and 11 cups of yogurt for $11.50. Find the cost of each item