A coin contains 9 grams of nickel and 16 grams of copper what percent of the coins are copper

What is the approximate circumference of the circle shown below?

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?