The principal of mountain middle school has a big glass jar of marbles. the empty jar weighs 40.5 ounces, and each of the 1,000 marbles weighs 1.25 ounces. find the total weight in ounces of the marbles.

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w